10-Q 1 alk10-q22017.htm 10-Q
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 10-Q
x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2017
OR
¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to
Commission File Number 1-8957
ALASKA AIR GROUP, INC.

Delaware |  | 91-1292054
(State of Incorporation) |  | (I.R.S. Employer Identification No.)

19300 International Boulevard, Seattle, Washington 98188
Telephone: (206) 392-5040

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer x | Accelerated filer ¨ | Non-accelerated filer ¨ (Do not check if a smaller reporting company) | Smaller reporting company ¨ | Emerging growth company ¨

If an emerging growth company, indicate by checkmark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.): Yes ¨ No x
The registrant has 123,525,463 common shares, par value $0.01, outstanding at July 31, 2017.

ALASKA AIR GROUP, INC.
FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 2017
TABLE OF CONTENTS

PART I. | FINANCIAL INFORMATION | 4
ITEM 1. | CONDENSED CONSOLIDATED FINANCIAL STATEMENTS | 4
ITEM 2. | MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS | 21
ITEM 3. | QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK | 41
ITEM 4. | CONTROLS AND PROCEDURES | 41
PART II. | OTHER INFORMATION | 42
ITEM 1. | LEGAL PROCEEDINGS | 42
ITEM 1A. | RISK FACTORS | 42
ITEM 2. | UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS | 42
ITEM 3. | DEFAULTS UPON SENIOR SECURITIES | 42
ITEM 4. | MINE SAFETY DISCLOSURES | 42
ITEM 5. | OTHER INFORMATION | 42
ITEM 6. | EXHIBITS | 43
| SIGNATURES | 43

As used in this Form 10-Q, the terms “Air Group,” the "Company," “our,” “we” and "us" refer to Alaska Air Group, Inc. and its subsidiaries, unless the context indicates otherwise. Alaska Airlines, Inc., Virgin America Inc. and Horizon Air Industries, Inc. are referred to as “Alaska,” "Virgin America" and “Horizon” and together as our “airlines.”
2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
Cautionary Note Regarding Forward-Looking Statements
In addition to historical information, this Form 10-Q contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. Forward-looking statements are those that predict or describe future events or trends and that do not relate solely to historical matters. You can generally identify forward-looking statements as statements containing the words "believe," "expect," "will," "anticipate," "intend," "estimate," "project," "assume" or other similar expressions, although not all forward-looking statements contain these identifying words. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from historical experience or the Company’s present expectations. Some of the things that could cause our actual results to differ from our expectations are:

• | the competitive environment in our industry;

• | changes in our operating costs, primarily fuel, which can be volatile;

• | general economic conditions, including the impact of those conditions on customer travel behavior;

• | our ability to meet our cost reduction goals;

• | operational disruptions;

• | an aircraft accident or incident;

• | labor disputes and our ability to attract and retain qualified personnel;

• | the concentration of our revenue from a few key markets;

• | actual or threatened terrorist attacks, global instability and potential U.S. military actions or activities;

• | our reliance on automated systems and the risks associated with changes made to those systems;

• | changes in laws and regulations;

• | our ability to successfully integrate the operations of Virgin America into those of Alaska;

• | our ability to achieve anticipated synergies and timing thereof in connection with the acquisition of Virgin America.

You should not place undue reliance on our forward-looking statements because the matters they describe are subject to known and unknown risks, uncertainties and other unpredictable factors, many of which are beyond our control. Our forward-looking statements are based on the information currently available to us and speak only as of the date on which this report was filed with the SEC. We expressly disclaim any obligation to issue any updates or revisions to our forward-looking statements, even if subsequent events cause our expectations to change regarding the matters discussed in those statements. Over time, our actual results, performance or achievements will likely differ from the anticipated results, performance or achievements that are expressed or implied by our forward-looking statements, and such differences might be significant and materially adverse to our shareholders. For a discussion of these and other risk factors, see Item 1A. "Risk Factors” of the Company’s annual report on Form 10-K for the year ended December 31, 2016, and Item 1A. "Risk Factors" included herein. Please consider our forward-looking statements in light of those risks as you read this report.
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PART I

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

ALASKA AIR GROUP, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)

(in millions) | June 30, 2017 |  | December 31, 2016
ASSETS |  |  |
Current Assets |  |  |
Cash and cash equivalents | $ | 198 |  |  | $ | 328 |
Marketable securities | 1,724 |  |  | 1,252 |
Total cash and marketable securities | 1,922 |  |  | 1,580 |
Receivables—net | 326 |  |  | 302 |
Inventories and supplies—net | 52 |  |  | 47 |
Prepaid expenses and other current assets | 125 |  |  | 121 |
Total Current Assets | 2,425 |  |  | 2,050 |
Property and Equipment |  |  |  |  |
Aircraft and other flight equipment | 7,377 |  |  | 6,947 |
Other property and equipment | 1,158 |  |  | 1,103 |
Deposits for future flight equipment | 526 |  |  | 545 |
| 9,061 |  |  | 8,595 |
Less accumulated depreciation and amortization | 3,059 |  |  | 2,929 |
Total Property and Equipment—Net | 6,002 |  |  | 5,666 |
Goodwill | 1,940 |  |  | 1,934 |
Intangible assets | 137 |  |  | 143 |
Other noncurrent assets | 216 |  |  | 169 |
Other Assets | 2,293 |  |  | 2,246 |
Total Assets | $ | 10,720 |  |  | $ | 9,962 |

See accompanying notes to condensed consolidated financial statements.
4

ALASKA AIR GROUP, INC.
CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)

(in millions, except share amounts) | June 30, 2017 |  | December 31, 2016
LIABILITIES AND SHAREHOLDERS' EQUITY |  |  |
Current Liabilities |  |  |
Accounts payable | $ | 95 |  |  | $ | 92 |
Accrued wages, vacation and payroll taxes | 308 |  |  | 397 |
Air traffic liability | 1,255 |  |  | 849 |
Other accrued liabilities | 979 |  |  | 878 |
Current portion of long-term debt | 337 |  |  | 319 |
Total Current Liabilities | 2,974 |  |  | 2,535 |
Long-Term Debt, Net of Current Portion | 2,469 |  |  | 2,645 |
Other Liabilities and Credits |  |  |  |  |
Deferred income taxes | 598 |  |  | 463 |
Deferred revenue | 652 |  |  | 640 |
Obligation for pension and postretirement medical benefits | 336 |  |  | 331 |
Other liabilities | 427 |  |  | 417 |
| 2,013 |  |  | 1,851 |
Commitments and Contingencies |  |  |  |  |
Shareholders' Equity |  |  |  |  |
Preferred stock, $0.01 par value, Authorized: 5,000,000 shares, none issued or outstanding | — |  |  | — |
Common stock, $0.01 par value, Authorized: 400,000,000 shares, Issued: 2017 - 129,638,780 shares; 2016 - 129,189,634 shares, Outstanding: 2017 - 123,520,517 shares; 2016 - 123,328,051 shares | 1 |  |  | 1 |
Capital in excess of par value | 135 |  |  | 110 |
Treasury stock (common), at cost: 2017 - 6,118,263 shares; 2016 - 5,861,583 shares | (466 | ) |  | (443 | )
Accumulated other comprehensive loss | (294 | ) |  | (305 | )
Retained earnings | 3,888 |  |  | 3,568 |
| 3,264 |  |  | 2,931 |
Total Liabilities and Shareholders' Equity | $ | 10,720 |  |  | $ | 9,962 |

See accompanying notes to condensed consolidated financial statements.
5

ALASKA AIR GROUP, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited)

| Three Months Ended June 30, |  | Six Months Ended June 30,
(in millions, except per share amounts) | 2017 |  | 2016 |  | 2017 |  | 2016
Operating Revenues |  |  |  |  |  |  |
Passenger |  |  |  |  |  |  |
Mainline | $ | 1,556 |  |  | $ | 1,036 |  |  | $ | 2,828 |  |  | $ | 1,963 |
Regional | 251 |  |  | 227 |  |  | 463 |  |  | 433 |
Total passenger revenue | 1,807 |  |  | 1,263 |  |  | 3,291 |  |  | 2,396 |
Freight and mail | 32 |  |  | 27 |  |  | 56 |  |  | 51 |
Other—net | 263 |  |  | 204 |  |  | 504 |  |  | 394 |
Total Operating Revenues | 2,102 |  |  | 1,494 |  |  | 3,851 |  |  | 2,841 |
Operating Expenses |  |  |  |  |  |  |  |  |
Wages and benefits | 469 |  |  | 332 |  |  | 917 |  |  | 668 |
Variable incentive pay | 27 |  |  | 32 |  |  | 58 |  |  | 64 |
Aircraft fuel, including hedging gains and losses | 344 |  |  | 201 |  |  | 683 |  |  | 368 |
Aircraft maintenance | 96 |  |  | 65 |  |  | 183 |  |  | 133 |
Aircraft rent | 69 |  |  | 26 |  |  | 134 |  |  | 55 |
Landing fees and other rentals | 99 |  |  | 63 |  |  | 214 |  |  | 143 |
Contracted services | 77 |  |  | 60 |  |  | 158 |  |  | 120 |
Selling expenses | 97 |  |  | 55 |  |  | 178 |  |  | 104 |
Depreciation and amortization | 90 |  |  | 92 |  |  | 180 |  |  | 180 |
Food and beverage service | 50 |  |  | 31 |  |  | 95 |  |  | 62 |
Third-party regional carrier expense | 27 |  |  | 24 |  |  | 54 |  |  | 47 |
Special items—merger-related costs | 24 |  |  | 14 |  |  | 64 |  |  | 14 |
Other | 140 |  |  | 81 |  |  | 274 |  |  | 175 |
Total Operating Expenses | 1,609 |  |  | 1,076 |  |  | 3,192 |  |  | 2,133 |
Operating Income | 493 |  |  | 418 |  |  | 659 |  |  | 708 |
Nonoperating Income (Expense) |  |  |  |  |  |  |  |  |
Interest income | 9 |  |  | 7 |  |  | 16 |  |  | 13 |
Interest expense | (26 | ) |  | (9 | ) |  | (51 | ) |  | (22 | )
Interest capitalized | 4 |  |  | 7 |  |  | 8 |  |  | 15 |
Other—net | (1 | ) |  | (3 | ) |  | (1 | ) |  | (2 | )
| (14 | ) |  | 2 |  |  | (28 | ) |  | 4 |
Income before income tax | 479 |  |  | 420 |  |  | 631 |  |  | 712 |
Income tax expense | 183 |  |  | 160 |  |  | 236 |  |  | 268 |
Net Income | $ | 296 |  |  | $ | 260 |  |  | $ | 395 |  |  | $ | 444 |
Basic Earnings Per Share: | $ | 2.40 |  |  | $ | 2.11 |  |  | $ | 3.19 |  |  | $ | 3.58 |
Diluted Earnings Per Share: | $ | 2.38 |  |  | $ | 2.10 |  |  | $ | 3.17 |  |  | $ | 3.56 |
Shares used for computation: |  |  |  |  |  |  |  |
Basic | 123.573 |  |  | 123.250 |  |  | 123.534 |  |  | 123.900 |
Diluted | 124.332 |  |  | 123.988 |  |  | 124.374 |  |  | 124.715 |
Cash dividend declared per share: | $ | 0.30 |  |  | $ | 0.275 |  |  | $ | 0.60 |  |  | $ | 0.55 |

See accompanying notes to condensed consolidated financial statements.
6

ALASKA AIR GROUP, INC.
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE OPERATIONS (unaudited)

| Three Months Ended June 30, |  | Six Months Ended June 30,
(in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Net Income | $ | 296 |  |  | $ | 260 |  |  | $ | 395 |  |  | $ | 444 |
Other Comprehensive Income (Loss): |  |  |  |  |  |  |
Related to marketable securities: |  |  |  |  |  |  |
Unrealized holding gains arising during the period | 1 |  |  | 7 |  |  | 4 |  |  | 19 |
Reclassification of (gains) losses into Other—net nonoperating income (expense) | 1 |  |  | (1 | ) |  | 1 |  |  | (1 | )
Income tax effect | (1 | ) |  | (2 | ) |  | (2 | ) |  | (6 | )
Total | 1 |  |  | 4 |  |  | 3 |  |  | 12 |
Related to employee benefit plans: |  |  |  |  |  |  |
Reclassification of net pension expense into Wages and benefits | 5 |  |  | 5 |  |  | 11 |  |  | 10 |
Income tax effect | (1 | ) |  | (2 | ) |  | (3 | ) |  | (4 | )
Total | 4 |  |  | 3 |  |  | 8 |  |  | 6 |
Related to interest rate derivative instruments: |  |  |  |  |  |  |
Unrealized holding losses arising during the period | (3 | ) |  | (2 | ) |  | (2 | ) |  | (7 | )
Reclassification of losses into Aircraft rent | 2 |  |  | 2 |  |  | 2 |  |  | 3 |
Income tax effect | 1 |  |  | — |  |  | — |  |  | 2 |
Total | — |  |  | — |  |  | — |  |  | (2 | )
Other Comprehensive Income | 5 |  |  | 7 |  |  | 11 |  |  | 16 |
Comprehensive Income | $ | 301 |  |  | $ | 267 |  |  | $ | 406 |  |  | $ | 460 |

See accompanying notes to condensed consolidated financial statements.
7

ALASKA AIR GROUP, INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)

| Six Months Ended June 30,
(in millions) | 2017 |  | 2016
Cash flows from operating activities: |  |  |
Net income | $ | 395 |  |  | $ | 444 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Depreciation and amortization | 180 |  |  | 180 |
Stock-based compensation and other | 25 |  |  | 13 |
Changes in certain assets and liabilities: |  |  |
Changes in deferred tax provision | 132 |  |  | 41 |
Increase in air traffic liability | 406 |  |  | 201 |
Increase in deferred revenue | 15 |  |  | 48 |
Other—net | (69 | ) |  | (28 | )
Net cash provided by operating activities | 1,084 |  |  | 899 |
Cash flows from investing activities: |  |  |  |  |
Property and equipment additions: |  |  |  |  |
Aircraft and aircraft purchase deposits | (404 | ) |  | (268 | )
Other flight equipment | (45 | ) |  | (31 | )
Other property and equipment | (63 | ) |  | (41 | )
Total property and equipment additions, including capitalized interest | (512 | ) |  | (340 | )
Purchases of marketable securities | (1,010 | ) |  | (610 | )
Sales and maturities of marketable securities | 541 |  |  | 357 |
Other investing activities | 10 |  |  | 3 |
Net cash used in investing activities | (971 | ) |  | (590 | )
Cash flows from financing activities: |  |  |  |  |
Long-term debt payments | (159 | ) |  | (57 | )
Common stock repurchases | (22 | ) |  | (193 | )
Dividends paid | (74 | ) |  | (68 | )
Other financing activities | 12 |  |  | 17 |
Net cash used in financing activities | (243 | ) |  | (301 | )
Net increase (decrease) in cash and cash equivalents | (130 | ) |  | 8 |
Cash and cash equivalents at beginning of year | 328 |  |  | 73 |
Cash and cash equivalents at end of the period | $ | 198 |  |  | $ | 81 |
Supplemental disclosure: |  |  |  |  |
Cash paid during the period for: |  |  |
Interest (net of amount capitalized) | $ | 42 |  |  | $ | 8 |
Income taxes | 14 |  |  | 182 |

See accompanying notes to condensed consolidated financial statements.
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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)
NOTE 1. GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Organization and Basis of Presentation
The condensed consolidated financial statements include the accounts of Air Group, and its primary subsidiaries, Alaska, Horizon and, starting December 14, 2016, Virgin America. The Company conducts substantially all of its operations through these subsidiaries. All significant intercompany balances and transactions have been eliminated. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim financial information. Consistent with these requirements, this Form 10-Q does not include all the information required by GAAP for complete financial statements. It should be read in conjunction with the consolidated financial statements and accompanying notes in the Form 10-K for the year ended December 31, 2016. In the opinion of management, all adjustments have been made that are necessary to fairly present the Company’s financial position as of June 30, 2017 and the results of operations for the three and six months ended June 30, 2017 and 2016. Such adjustments were of a normal recurring nature.
In preparing these statements, the Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities, as well as the reported amounts of revenues and expenses. Due to seasonal variations in the demand for air travel, the volatility of aircraft fuel prices, changes in global economic conditions, changes in the competitive environment and other factors, operating results for the three and six months ended June 30, 2017 are not necessarily indicative of operating results for the entire year.
Recently Issued Accounting Pronouncements
In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers"(Topic 606), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. This comprehensive new standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. In March 2016, the FASB issued ASU 2016-08, "Revenue from Contracts with Customers (Topic 606), Principal versus Agent Considerations" to clarify the guidance on determining whether the Company is considered the principal or the agent in a revenue transaction where a third party is providing goods or services to a customer. Entities are permitted to use either a full retrospective or cumulative effect transition method, and are required to adopt all parts of the new revenue standard using the same transition method. The new standard is effective for the Company on January 1, 2018.
At this time, the Company believes the most significant impact to the financial statements will be to Mileage Plan™ revenues and liabilities. The Company currently uses the incremental cost approach for miles earned through travel. As this approach will be eliminated with the standard, the Company will be required to allocate a portion of the ticket price through a relative selling price model and defer revenue recognition until the ticket is flown or unused mileage credits expire. The Company estimates an increase to the liability for earned miles of approximately $350 million to $450 million at the time of adoption. The allocated value to miles earned through travel will offset passenger revenue during the period they are issued, rather than recorded using the incremental cost approach.
The adoption of the new standard is also expected to result in a change in income statement classification of the majority of ancillary revenues from Other revenue to Passenger revenue. This will affect common industry metrics, such as PRASM and RASM. Certain commission revenue from interline arrangements that was previously offset against related expense will now be classified as Other revenue, which will impact RASM and CASM. Unused ticket revenue that was previously recorded at the time of expiration will now be recorded at the original departure date if that ticket has not been changed or refunded prior to that date, based on estimates of expected expiration. This concept is referred to as ticket breakage. The Company estimates the change in ticket breakage methodology will not have a significant impact on the statements of operations, but will decrease air traffic liability by approximately $80 million to $90 million.
The Company continues to evaluate and model the full impact of the standard and will apply the full retrospective transition method. The overall impact to equity as of the beginning of the retroactive reporting period, including the changes discussed above as well as other less material changes, is expected to be between $170 million and $250 million.
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In February 2016, the FASB issued ASU 2016-02, "Leases" (Topic 842), which requires lessees to recognize assets and liabilities for leases currently classified as operating leases. Under the new standard, a lessee will recognize a liability on the balance sheet representing the lease payments owed, and a right-of-use-asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election not to recognize lease assets and lease liabilities. At this time, the Company believes the most significant impact to the financial statements will relate to the recording of a right-of-use asset associated with leased aircraft. Other leases, including airports and real estate, equipment, software and other miscellaneous leases continue to be assessed for impact of the ASU. The new standard is effective for the Company on January 1, 2019. Early adoption of the standard is permitted. The Company has determined that it will not early adopt the standard.
In March 2016, the FASB issued ASU 2016-09, "Compensation—Stock Compensation" (Topic 718), which simplifies several aspects of accounting for employee share-based payment awards, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. The ASU was adopted prospectively as of January 1, 2017. Prior periods have not been adjusted. The adoption of the standard did not have a material impact on the Company's statements of operations or financial position.
In January 2017, the FASB issued ASU 2017-04, "Intangibles—Goodwill and Other" (Topic 350), which eliminates step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. The ASU is effective for the Company beginning January 1, 2019. Early adoption of the standard is permitted. Beginning in fiscal 2017, the Company will be required to perform an impairment test for goodwill arising from its acquisition of Virgin America and has adopted the standard effective January 1, 2017.
In March 2017, the FASB issued ASU 2017-07, "Compensation—Retirement Benefits" (Topic 715), which will require the Company to separate service cost component from other components of net periodic benefit cost and report it in Wages and benefits in the statements of operations. The other components of net periodic benefit cost will be required to be presented in Nonoperating income (expense) in the statements of operations. These components will not be eligible for capitalization in assets. The Company will be required to disclose the line(s) used to present these other components if not presented separately in the income statement. The ASU is effective for the Company beginning January 1, 2018. The Company is currently evaluating the impact.
NOTE 2. ACQUISITION OF VIRGIN AMERICA
Virgin America
On December 14, 2016, the Company acquired 100% of the outstanding common shares and voting interest of Virgin America for $57 per share, or total cash consideration of $2.6 billion. Virgin America offers scheduled air transportation throughout the United States and Mexico primarily from its hub cities of Los Angeles, San Francisco and, to a lesser extent, Dallas Love Field, to other major business and leisure destinations in North America. The Company believes the acquisition of Virgin America will provide broader national reach and position it to better serve people living on the West Coast. The combined airline has approximately 1,200 daily departures and leverages Alaska's strength in the Pacific Northwest with Virgin America's strength in California. The Company believes that combining loyalty programs and networks will provide greater benefits for its guests and expand its international partner portfolio, giving guests an even more expansive global reach.
Merger-related costs
The Company incurred pretax merger-related costs of $24 million and $14 million for the three months ended June 30, 2017 and 2016 and of $64 million and $14 million for the six months ended June 30, 2017 and 2016. Costs classified as merger-related are directly attributable to merger activities and are recorded as "Special items—merger-related costs" within the statements of operations. The Company expects to continue to incur merger-related costs in the future as the integration continues.
Fair values of the assets acquired and the liabilities assumed
The transaction has been accounted for as a business combination using the acquisition method of accounting, which requires, among other things, assets acquired and liabilities assumed to be recognized on the balance sheet at their fair values as of the acquisition date. As of June 30, 2017 the fair values of property and equipment and certain liabilities, included in Other accrued liabilities and Other liabilities, goodwill, intangible assets and deferred income taxes have been prepared on a preliminary basis and are subject to further adjustments as the Company completes its analysis. There were no significant fair value adjustments
10

made during the three and six months ended June 30, 2017. The Company will finalize the amounts recognized by December 14, 2017.
Fair values of the assets acquired and the liabilities assumed as of the acquisition date of December 14, 2016, at June 30, 2017 and December 31, 2016 were as follows (in millions):

| June 30, 2017 |  | December 31, 2016
Cash and cash equivalents | $ | 645 |  |  | $ | 645 |
Receivables | 44 |  |  | 44 |
Prepaid expenses and other current assets | 16 |  |  | 16 |
Property and equipment—provisional | 561 |  |  | 560 |
Intangible assets—provisional | 141 |  |  | 143 |
Goodwill—provisional | 1,940 |  |  | 1,934 |
Other assets | 84 |  |  | 84 |
Total assets | 3,431 |  |  | 3,426 |
Accounts payable | 22 |  |  | 22 |
Accrued wages, vacation and payroll taxes | 50 |  |  | 51 |
Air traffic liabilities | 172 |  |  | 172 |
Other accrued liabilities—provisional | 195 |  |  | 196 |
Current portion of long-term debt | 125 |  |  | 125 |
Long-term debt, net of current portion | 360 |  |  | 360 |
Deferred income taxes—provisional | (307 | ) |  | (304 | )
Deferred revenue | 126 |  |  | 126 |
Other liabilities—provisional | 92 |  |  | 82 |
Total liabilities | 835 |  |  | 830 |
Total purchase price | $ | 2,596 |  |  | $ | 2,596 |

NOTE 3. FAIR VALUE MEASUREMENTS
In determining fair value, there is a three-level hierarchy based on the reliability of the inputs used. Level 1 refers to fair values based on quoted prices in active markets for identical assets or liabilities. Level 2 refers to fair values estimated using significant other observable inputs and Level 3 refers to fair values estimated using significant unobservable inputs.
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Fair Value of Financial Instruments on a Recurring Basis
As of June 30, 2017, total cost basis for all marketable securities was $1.7 billion. There were no significant differences between the cost basis and fair value of any individual class of marketable securities.
Fair values of financial instruments on the consolidated balance sheet (in millions):

June 30, 2017 | Level 1 |  | Level 2 |  | Total
Assets |  |  |  |  |
Marketable securities |  |  |  |  |
U.S. government and agency securities | $ | 448 |  |  | $ | — |  |  | $ | 448 |
Foreign government bonds | — |  |  | 39 |  |  | 39 |
Asset-backed securities | — |  |  | 222 |  |  | 222 |
Mortgage-backed securities | — |  |  | 113 |  |  | 113 |
Corporate notes and bonds | — |  |  | 889 |  |  | 889 |
Municipal securities | — |  |  | 13 |  |  | 13 |
Total Marketable securities | 448 |  |  | 1,276 |  |  | 1,724 |
Derivative instruments |  |  |  |  |
Fuel hedge call options | — |  |  | 8 |  |  | 8 |
Interest rate swap agreements | — |  |  | 8 |  |  | 8 |
Total Assets | 448 |  |  | 1,292 |  |  | 1,740 |
Liabilities |  |  |  |  |
Derivative instruments |  |  |  |  |
Interest rate swap agreements | — |  |  | (12 | ) |  | (12 | )
Total Liabilities | — |  |  | (12 | ) |  | (12 | )

December 31, 2016 | Level 1 |  | Level 2 |  | Total
Assets |  |  |  |  |
Marketable securities |  |  |  |  |
U.S. government and agency securities | $ | 287 |  |  | $ | — |  |  | $ | 287 |
Foreign government bonds | — |  |  | 36 |  |  | 36 |
Asset-backed securities | — |  |  | 138 |  |  | 138 |
Mortgage-backed securities | — |  |  | 89 |  |  | 89 |
Corporate notes and bonds | — |  |  | 691 |  |  | 691 |
Municipal securities | — |  |  | 11 |  |  | 11 |
Total Marketable securities | 287 |  |  | 965 |  |  | 1,252 |
Derivative instruments |  |  |  |  |
Fuel hedge call options | — |  |  | 20 |  |  | 20 |
Total Assets | 287 |  |  | 985 |  |  | 1,272 |
Liabilities |  |  |  |  |
Derivative instruments |  |  |  |  |
Interest rate swap agreements | — |  |  | (5 | ) |  | (5 | )
Total Liabilities | — |  |  | (5 | ) |  | (5 | )

The Company uses the market and income approach to determine the fair value of marketable securities. U.S. government securities are Level 1 as the fair value is based on quoted prices in active markets. Foreign government bonds, asset-backed securities, mortgage-backed securities, corporate notes and bonds, and municipal securities are Level 2 as the fair value is based on standard valuation models that are calculated based on observable inputs such as quoted interest rates, yield curves, credit ratings of the security and other observable market information.
12

The Company uses the market approach and the income approach to determine the fair value of derivative instruments. The fair value for fuel hedge call options is determined utilizing an option pricing model based on inputs that are readily available in active markets or can be derived from information available in active markets. In addition, the fair value considers the exposure to credit losses in the event of non-performance by counterparties. Interest rate swap agreements are Level 2 as the fair value of these contracts is determined based on the difference between the fixed interest rate in the agreements and the observable LIBOR-based interest forward rates at period end multiplied by the total notional value.
Activity and Maturities for Marketable Securities
Activity for marketable securities (in millions):

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Proceeds from sales and maturities | $ | 256 |  |  | $ | 217 |  |  | $ | 541 |  |  | $ | 357 |
Gross realized gains | — |  |  | 2 |  |  | 1 |  |  | 2 |
Gross realized losses | (1 | ) |  | (1 | ) |  | (2 | ) |  | (1 | )

Unrealized gains and losses (in millions):

| June 30, 2017 |  | December 31, 2016
Unrealized gains | 4 |  |  | 2 |
Unrealized losses | (5 | ) |  | (7 | )

Maturities for marketable securities (in millions):

June 30, 2017 | Cost Basis |  | Fair Value
Due in one year or less | $ | 253 |  |  | $ | 252 |
Due after one year through five years | 1,453 |  |  | 1,453 |
Due after five years through 10 years | 19 |  |  | 19 |
Due after 10 years | — |  |  | — |
Total | $ | 1,725 |  |  | $ | 1,724 |

Management does not believe any remaining unrealized losses represent other-than-temporary impairments based on its evaluation of available information as of June 30, 2017.
Fair Value of Other Financial Instruments
The Company uses the following methods and assumptions to determine the fair value of financial instruments that are not recognized at fair value as described below.
Cash and Cash Equivalents: Carried at amortized cost, which approximates fair value.
Debt: The carrying amount of the Company's variable-rate debt approximates fair value. For fixed-rate debt, the Company uses the income approach to determine the estimated fair value, calculated as the sum of future cash flows discounted at borrowing rates for comparable debt over the weighted life of the outstanding debt. The estimated fair value of the fixed-rate debt is Level 3 as certain inputs used are unobservable.
Fixed-rate debt that is not carried at fair value on the consolidated balance sheet and the estimated fair value of long-term fixed-rate debt is as follows (in millions):

| June 30, 2017 |  | December 31, 2016
Carrying amount | $ | 1,090 |  |  | $ | 1,179 |
Fair value | 1,105 |  |  | 1,199 |

Assets and Liabilities Measured at Fair Value on Nonrecurring Basis
13

Certain assets and liabilities are recognized or disclosed at fair value on a nonrecurring basis, including property, plant and equipment, goodwill, and intangible assets. These assets are subject to fair valuation when there is evidence of impairment. No impairment was recognized in the three and six months ended June 30, 2017 or June 30, 2016.
NOTE 4. FREQUENT FLYER PROGRAMS
Frequent flyer program deferred revenue and liabilities included in the consolidated balance sheets (in millions):

| June 30, 2017 |  | December 31, 2016
Current Liabilities: |  |  |
Other accrued liabilities | $ | 499 |  |  | $ | 484 |
Other Liabilities and Credits: |  |  |
Deferred revenue | 652 |  |  | 638 |
Other liabilities | 23 |  |  | 21 |
Total | $ | 1,174 |  |  | $ | 1,143 |

Frequent flyer program revenue included in the consolidated statements of operations (in millions):

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Passenger revenues | $ | 94 |  |  | $ | 73 |  |  | $ | 180 |  |  | $ | 143 |
Other—net revenues | 128 |  |  | 108 |  |  | 248 |  |  | 211 |
Total | $ | 222 |  |  | $ | 181 |  |  | $ | 428 |  |  | $ | 354 |

NOTE 5. LONG-TERM DEBT
Long-term debt obligations on the consolidated balance sheet (in millions):

| June 30, 2017 |  | December 31, 2016
Fixed-rate notes payable due through 2028 | $ | 1,090 |  |  | $ | 1,179 |
Variable-rate notes payable due through 2028 | 1,732 |  |  | 1,803 |
Less debt issuance costs | (16 | ) |  | (18 | )
Total debt | 2,806 |  |  | 2,964 |
Less current portion | 337 |  |  | 319 |
Long-term debt, less current portion | $ | 2,469 |  |  | $ | 2,645 |
Weighted-average fixed-interest rate | 4.3 | % |  | 4.4 | %
Weighted-average variable-interest rate | 2.6 | % |  | 2.4 | %

During the six months ended June 30, 2017, the Company made debt payments of $159 million.
At June 30, 2017, long-term debt principal payments for the next five years and thereafter are as follows (in millions):

| Total
Remainder of 2017 | $ | 161 |
2018 | 350 |
2019 | 422 |
2020 | 449 |
2021 | 422 |
Thereafter | 1,015 |
Total | $ | 2,819 |

14

Bank Lines of Credit
The Company has three credit facilities with availability totaling $452 million. All three facilities have variable interest rates based on LIBOR plus a specified margin. One credit facility increased from $100 million to $250 million in June 2017. It expires in June 2021 and is secured by aircraft. The second credit facility is for $52 million, expires in October 2017 with a mechanism for annual renewal and is secured by aircraft. The third credit facility increased from $100 million to $150 million in March 2017. It expires in March 2022 and is secured by certain accounts receivable, spare engines, spare parts and ground service equipment. The Company has secured letters of credit against the $52 million facility, but has no plans to borrow using either of the two other facilities. All three credit facilities have a requirement to maintain a minimum unrestricted cash and marketable securities balance of $500 million. The Company is in compliance with this covenant at June 30, 2017.
NOTE 6. EMPLOYEE BENEFIT PLANS
Net periodic benefit costs for the qualified defined-benefit plans included the following components (in millions):

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Service cost | $ | 10 |  |  | $ | 9 |  |  | $ | 20 |  |  | $ | 18 |
Interest cost | 18 |  |  | 19 |  |  | 36 |  |  | 37 |
Expected return on assets | (26 | ) |  | (27 | ) |  | (53 | ) |  | (54 | )
Recognized actuarial loss | 6 |  |  | 6 |  |  | 13 |  |  | 12 |
Total | $ | 8 |  |  | $ | 7 |  |  | $ | 16 |  |  | $ | 13 |

NOTE 7. COMMITMENTS AND CONTINGENCIES
Future minimum payments for commitments as of June 30, 2017 (in millions):

| Aircraft Leases |  | Facility Leases |  | Aircraft Purchase Commitments |  | Capacity Purchase Agreements (a) |  | Aircraft Maintenance Deposits |  | Aircraft Maintenance and Parts Management
Remainder of 2017 | $ | 152 |  |  | $ | 60 |  |  | $ | 463 |  |  | $ | 38 |  |  | $ | 29 |  |  | $ | 15 |
2018 | 318 |  |  | 73 |  |  | 836 |  |  | 80 |  |  | 61 |  |  | 32 |
2019 | 306 |  |  | 64 |  |  | 758 |  |  | 85 |  |  | 65 |  |  | 35 |
2020 | 280 |  |  | 58 |  |  | 338 |  |  | 90 |  |  | 68 |  |  | 37 |
2021 | 243 |  |  | 51 |  |  | 260 |  |  | 94 |  |  | 63 |  |  | 40 |
Thereafter | 954 |  |  | 178 |  |  | 362 |  |  | 676 |  |  | 90 |  |  | — |
Total | $ | 2,253 |  |  | $ | 484 |  |  | $ | 3,017 |  |  | $ | 1,063 |  |  | $ | 376 |  |  | $ | 159 |

(a) | Includes all non-aircraft lease costs associated with capacity purchase agreements.

Lease Commitments
Aircraft lease commitments include future obligations for all of the Company's operating airlines—Alaska, Virgin America and Horizon, as well as aircraft leases operated by third-parties. At June 30, 2017, the Company had lease contracts for 14 Boeing 737 ("B737") aircraft, 55 Airbus aircraft (two of which were delivered during the second quarter of 2017), 15 Bombardier Q400 aircraft and 20 Embraer 175 ("E175") with SkyWest Airlines, Inc. ("SkyWest"). The Company has an additional eight scheduled lease deliveries of A321neo aircraft through 2018. All lease contracts have remaining non-cancelable lease terms ranging from 2017 to 2030. The Company has the option to increase capacity flown by SkyWest with eight additional E175 aircraft deliveries in 2020. Options to lease are not reflected in the commitments table above.
Facility lease commitments primarily include airport and terminal facilities and building leases. Total rent expense for aircraft and facility leases was $123 million and $63 million for the three months ended June 30, 2017 and 2016, and $261 million and $144 million for the six months ended June 30, 2017 and 2016.
15

Aircraft Purchase Commitments
Aircraft purchase commitments include non-cancelable contractual commitments for aircraft and engines. As of June 30, 2017, the Company had commitments to purchase 48 B737 aircraft (16 B737 NextGen aircraft and 32 B737 MAX aircraft, with deliveries in the remainder of 2017 through 2023) and 27 E175 aircraft with deliveries in 2017 through 2019. The Company also has cancelable purchase commitments for 30 Airbus A320neo aircraft with deliveries from 2020 through 2022. In addition, the Company has options to purchase 41 B737 aircraft and 30 E175 aircraft. The cancelable purchase commitments and option payments are not reflected in the table above.
Capacity Purchase Agreements ("CPAs")
At June 30, 2017, Alaska had CPAs with three carriers, including the Company's wholly-owned subsidiary, Horizon. Horizon sells 100% of its capacity to Alaska under a CPA with Alaska. In addition, Alaska has CPAs with SkyWest to fly certain routes in the Lower 48 and Canada and with Peninsula Airways, Inc. ("PenAir") to fly certain routes in the state of Alaska. Under these agreements, Alaska pays the carriers an amount which is based on a determination of their cost of operating those flights and other factors intended to approximate market rates for those services. Future payments (excluding Horizon) are based on minimum levels of flying by the third-party carriers, which could differ materially due to variable payments based on actual levels of flying and certain costs associated with operating flights such as fuel.
Aircraft Maintenance Deposits
Through its acquisition of Virgin America, the Company is contractually required to make maintenance deposit payments to aircraft lessors, which represent maintenance reserves made solely to collateralize the lessor for future maintenance events should the Company not perform required maintenance. Most lease agreements provide that maintenance reserves are reimbursable upon completion of the major maintenance event in an amount equal to the lesser of (i) the amount qualified for reimbursement from maintenance reserves held by the lessor associated with the specific major maintenance event or (ii) the qualifying costs related to the specific major maintenance event.
Aircraft Maintenance and Parts Management
Through its acquisition of Virgin America, the Company has a separate maintenance-cost-per-hour contract for management and repair of certain rotable parts to support airframe and engine maintenance and repair. This agreement requires monthly payments based upon utilization, such as flight hours, cycles and age of the aircraft, and, in turn, the agreement transfers certain risks to the third-party service provider. There are minimum payments under this agreement, which are reflected in the table above. Accordingly, payments could differ materially based on actual aircraft utilization.
Contingencies
The Company is a party to routine litigation matters incidental to its business and with respect to which no material liability is expected. Liabilities for litigation related contingencies are recorded when a loss is determined to be probable and estimable.
In 2015, three flight attendants filed a class action lawsuit seeking to represent all Virgin America flight attendants for damages based on alleged violations of California and City of San Francisco wage and hour laws. Plaintiffs received class certification in November 2016. Virgin America filed a motion for summary judgment seeking to dismiss all claims on various federal preemption grounds. In January 2017, the Court denied in part and granted in part Virgin America’s motion. The Company believes the claims in this case are without factual and legal merit and intends to defend this lawsuit.
Management believes the ultimate disposition of these matters is not likely to materially affect the Company's financial position or results of operations. This forward-looking statement is based on management's current understanding of the relevant law and facts, and it is subject to various contingencies, including the potential costs and risks associated with litigation and the actions of arbitrators, judges and juries.
NOTE 8. SHAREHOLDERS' EQUITY
Dividends
During the three months ended June 30, 2017, the Company declared and paid cash dividends of $0.30 per share, or $37 million. During the six months ended June 30, 2017, the Company declared and paid cash dividends of $0.60 per share, or $74 million.
16

Common Stock Repurchase
In August 2015, the Board of Directors authorized a $1 billion share repurchase program. The program was paused in the second quarter of 2016 in anticipation of the acquisition of Virgin America. The Company resumed the share repurchase program in the current quarter. As of June 30, 2017, the Company has repurchased 4.4 million shares for $335 million under this program.
Share repurchase activity (in millions, except share amounts):

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
| Shares |  | Amount |  | Shares |  | Amount |  | Shares |  | Amount |  | Shares |  | Amount
2015 Repurchase Program—$1 billion | 256,680 |  |  | $ | 22 |  |  | 873,396 |  |  | $ | 67 |  |  | 256,680 |  |  | $ | 22 |  |  | 2,594,809 |  |  | $ | 193 |

Accumulated Other Comprehensive Loss
Components of accumulated other comprehensive loss, net of tax (in millions):

| June 30, 2017 |  | December 31, 2016
Marketable securities | $ | — |  |  | $ | (3 | )
Employee benefit plans | (291 | ) |  | (299 | )
Interest rate derivatives | (3 | ) |  | (3 | )
Total | $ | (294 | ) |  | $ | (305 | )

Earnings Per Share ("EPS")
Diluted EPS is calculated by dividing net income by the average number of common shares outstanding plus the number of additional common shares that would have been outstanding assuming the exercise of in-the-money stock options and restricted stock units, using the treasury-stock method. For the three and six months ended June 30, 2017 and 2016, anti-dilutive shares excluded from the calculation of EPS were not material.
NOTE 9. OPERATING SEGMENT INFORMATION
Alaska Air Group has three operating airlines—Alaska, Virgin America and Horizon. Each is regulated by the U.S. Department of Transportation’s Federal Aviation Administration. Alaska has CPAs for regional capacity with Horizon, as well as with third-party carriers SkyWest and PenAir, under which Alaska receives all passenger revenues.
Under U.S. GAAP, operating segments are defined as components of a business for which there is discrete financial information that is regularly assessed by the Chief Operating Decision Maker ("CODM") in making resource allocation decisions. Financial performance for the operating airlines and CPAs is managed and reviewed by the Company's CODM as part of three reportable operating segments:

• | Mainline - includes Alaska's and Virgin America’s scheduled air transportation for passengers and cargo throughout the U.S., and in parts of Canada, Mexico, Costa Rica and Cuba.

• | Regional - includes Horizon's and other third-party carriers’ scheduled air transportation for passengers across a shorter distance network within the U.S. under CPAs. This segment includes the actual revenues and expenses associated with regional flying, as well as an allocation of corporate overhead incurred by Air Group on behalf of the regional operations.

• | Horizon - includes the capacity sold to Alaska under CPA. Expenses include those typically borne by regional airlines such as crew costs, ownership costs and maintenance costs.

The CODM makes resource allocation decisions for these reporting segments based on flight profitability data, aircraft type, route economics and other financial information.
The "Consolidating and Other" column reflects parent company activity, consolidating entries and other immaterial business units of the company. The “Air Group Adjusted” column represents a non-GAAP measure that is used by the Company CODM
17

to evaluate performance and allocate resources. Adjustments are further explained below in reconciling to consolidated GAAP results.
18

Operating segment information is as follows (in millions):

| Three Months Ended June 30, 2017
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating revenues |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger |  |  |  |  |  |  |  |  |  |  |  |  |
Mainline | $ | 1,556 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,556 |  |  | $ | — |  |  | $ | 1,556 |
Regional | — |  |  | 251 |  |  | — |  |  | — |  |  | 251 |  |  | — |  |  | 251 |
Total passenger revenues | 1,556 |  |  | 251 |  |  | — |  |  | — |  |  | 1,807 |  |  | — |  |  | 1,807 |
CPA revenues | — |  |  | — |  |  | 108 |  |  | (108 | ) |  | — |  |  | — |  |  | — |
Freight and mail | 31 |  |  | 1 |  |  | — |  |  | — |  |  | 32 |  |  | — |  |  | 32 |
Other—net | 244 |  |  | 19 |  |  | 1 |  |  | (1 | ) |  | 263 |  |  | — |  |  | 263 |
Total operating revenues | 1,831 |  |  | 271 |  |  | 109 |  |  | (109 | ) |  | 2,102 |  |  | — |  |  | 2,102 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 1,026 |  |  | 206 |  |  | 116 |  |  | (107 | ) |  | 1,241 |  |  | 24 |  |  | 1,265 |
Economic fuel | 304 |  |  | 39 |  |  | — |  |  | (1 | ) |  | 342 |  |  | 2 |  |  | 344 |
Total operating expenses | 1,330 |  |  | 245 |  |  | 116 |  |  | (108 | ) |  | 1,583 |  |  | 26 |  |  | 1,609 |
Nonoperating income (expense) |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income | 9 |  |  | — |  |  | — |  |  | — |  |  | 9 |  |  | — |  |  | 9 |
Interest expense | (23 | ) |  | — |  |  | (3 | ) |  | — |  |  | (26 | ) |  | — |  |  | (26 | )
Other | 3 |  |  | — |  |  | 1 |  |  | (1 | ) |  | 3 |  |  | — |  |  | 3 |
Total Nonoperating income (expense) | (11 | ) |  | — |  |  | (2 | ) |  | (1 | ) |  | (14 | ) |  | — |  |  | (14 | )
Income (loss) before income tax | $ | 490 |  |  | $ | 26 |  |  | $ | (9 | ) |  | $ | (2 | ) |  | $ | 505 |  |  | $ | (26 | ) |  | $ | 479 |

| Three Months Ended June 30, 2016
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating revenues |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger |  |  |  |  |  |  |  |  |  |  |  |  |
Mainline | $ | 1,036 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,036 |  |  | $ | — |  |  | $ | 1,036 |
Regional | — |  |  | 227 |  |  | — |  |  | — |  |  | 227 |  |  | — |  |  | 227 |
Total passenger revenues | 1,036 |  |  | 227 |  |  | — |  |  | — |  |  | 1,263 |  |  | — |  |  | 1,263 |
CPA revenues | — |  |  | — |  |  | 110 |  |  | (110 | ) |  | — |  |  | — |  |  | — |
Freight and mail | 26 |  |  | 1 |  |  | — |  |  | — |  |  | 27 |  |  | — |  |  | 27 |
Other—net | 184 |  |  | 19 |  |  | 1 |  |  | — |  |  | 204 |  |  | — |  |  | 204 |
Total operating revenues | 1,246 |  |  | 247 |  |  | 111 |  |  | (110 | ) |  | 1,494 |  |  | — |  |  | 1,494 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 679 |  |  | 192 |  |  | 101 |  |  | (111 | ) |  | 861 |  |  | 14 |  |  | 875 |
Economic fuel | 180 |  |  | 31 |  |  | — |  |  | — |  |  | 211 |  |  | (10 | ) |  | 201 |
Total operating expenses | 859 |  |  | 223 |  |  | 101 |  |  | (111 | ) |  | 1,072 |  |  | 4 |  |  | 1,076 |
Nonoperating income (expense) |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income | 6 |  |  | — |  |  | 1 |  |  | — |  |  | 7 |  |  | — |  |  | 7 |
Interest expense | (4 | ) |  | — |  |  | (4 | ) |  | (1 | ) |  | (9 | ) |  | — |  |  | (9 | )
Other | 3 |  |  | — |  |  | — |  |  | 1 |  |  | 4 |  |  | — |  |  | 4 |
Total Nonoperating income (expense) | 5 |  |  | — |  |  | (3 | ) |  | — |  |  | 2 |  |  | — |  |  | 2 |
Income (loss) before income tax | $ | 392 |  |  | $ | 24 |  |  | $ | 7 |  |  | $ | 1 |  |  | $ | 424 |  |  | $ | (4 | ) |  | $ | 420 |

19

| Six Months Ended June 30, 2017
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating revenues |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger |  |  |  |  |  |  |  |  |  |  |  |  |
Mainline | $ | 2,828 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,828 |  |  | $ | — |  |  | $ | 2,828 |
Regional | — |  |  | 463 |  |  | — |  |  | — |  |  | 463 |  |  | — |  |  | 463 |
Total passenger revenues | 2,828 |  |  | 463 |  |  | — |  |  | — |  |  | 3,291 |  |  | — |  |  | 3,291 |
CPA revenues | — |  |  | — |  |  | 205 |  |  | (205 | ) |  | — |  |  | — |  |  | — |
Freight and mail | 54 |  |  | 2 |  |  | — |  |  | — |  |  | 56 |  |  | — |  |  | 56 |
Other—net | 466 |  |  | 36 |  |  | 2 |  |  | — |  |  | 504 |  |  | — |  |  | 504 |
Total operating revenues | 3,348 |  |  | 501 |  |  | 207 |  |  | (205 | ) |  | 3,851 |  |  | — |  |  | 3,851 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 2,024 |  |  | 406 |  |  | 219 |  |  | (204 | ) |  | 2,445 |  |  | 64 |  |  | 2,509 |
Economic fuel | 596 |  |  | 75 |  |  | — |  |  | — |  |  | 671 |  |  | 12 |  |  | 683 |
Total operating expenses | 2,620 |  |  | 481 |  |  | 219 |  |  | (204 | ) |  | 3,116 |  |  | 76 |  |  | 3,192 |
Nonoperating income (expense) |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income | 16 |  |  | — |  |  | — |  |  | — |  |  | 16 |  |  | — |  |  | 16 |
Interest expense | (45 | ) |  | — |  |  | (5 | ) |  | (1 | ) |  | (51 | ) |  | — |  |  | (51 | )
Other | 6 |  |  | — |  |  | 1 |  |  | — |  |  | 7 |  |  | — |  |  | 7 |
Total Nonoperating income (expense) | (23 | ) |  | — |  |  | (4 | ) |  | (1 | ) |  | (28 | ) |  | — |  |  | (28 | )
Income (loss) before income tax | 705 |  |  | 20 |  |  | (16 | ) |  | (2 | ) |  | 707 |  |  | (76 | ) |  | 631 |

| Six Months Ended June 30, 2016
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating revenues |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger |  |  |  |  |  |  |  |  |  |  |  |  |
Mainline | $ | 1,963 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,963 |  |  | $ | — |  |  | $ | 1,963 |
Regional | — |  |  | 433 |  |  | — |  |  | — |  |  | 433 |  |  | — |  |  | 433 |
Total passenger revenues | 1,963 |  |  | 433 |  |  | — |  |  | — |  |  | 2,396 |  |  | — |  |  | 2,396 |
CPA revenues | — |  |  | — |  |  | 213 |  |  | (213 | ) |  | — |  |  | — |  |  | — |
Freight and mail | 49 |  |  | 2 |  |  | — |  |  | — |  |  | 51 |  |  | — |  |  | 51 |
Other—net | 356 |  |  | 36 |  |  | 2 |  |  | — |  |  | 394 |  |  | — |  |  | 394 |
Total operating revenues | 2,368 |  |  | 471 |  |  | 215 |  |  | (213 | ) |  | 2,841 |  |  | — |  |  | 2,841 |
Operating expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 1,380 |  |  | 378 |  |  | 206 |  |  | (213 | ) |  | 1,751 |  |  | 14 |  |  | 1,765 |
Economic fuel | 324 |  |  | 56 |  |  | — |  |  | — |  |  | 380 |  |  | (12 | ) |  | 368 |
Total operating expenses | 1,704 |  |  | 434 |  |  | 206 |  |  | (213 | ) |  | 2,131 |  |  | 2 |  |  | 2,133 |
Nonoperating income (expense) |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income | 12 |  |  | — |  |  | 1 |  |  | — |  |  | 13 |  |  | — |  |  | 13 |
Interest expense | (16 | ) |  | — |  |  | (5 | ) |  | (1 | ) |  | (22 | ) |  | — |  |  | (22 | )
Other | 10 |  |  | — |  |  | — |  |  | 3 |  |  | 13 |  |  | — |  |  | 13 |
Total Nonoperating income (expense) | 6 |  |  | — |  |  | (4 | ) |  | 2 |  |  | 4 |  |  | — |  |  | 4 |
Income (loss) before income tax | 670 |  |  | 37 |  |  | 5 |  |  | 2 |  |  | 714 |  |  | (2 | ) |  | 712 |

(a) | Includes consolidating entries, Parent Company and other immaterial business units.

(b) | The Air Group Adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and does not include certain income and charges.

(c) | Includes merger-related costs and mark-to-market fuel-hedge accounting charges.

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Total assets were as follows (in millions):

| June 30, 2017 |  | December 31, 2016
Mainline | $ | 16,272 |  |  | $ | 15,260 |
Horizon | 834 |  |  | 690 |
Consolidating & Other | (6,386 | ) |  | (5,988 | )
Consolidated | $ | 10,720 |  |  | $ | 9,962 |

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

OVERVIEW
The following Management’s Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") is intended to help the reader understand the Company, our segment operations and our present business environment. MD&A is provided as a supplement to – and should be read in conjunction with – our consolidated financial statements and the accompanying notes. All statements in the following discussion that are not statements of historical information or descriptions of current accounting policy are forward-looking statements. Please consider our forward-looking statements in light of the risks referred to in this report’s introductory cautionary note and the risks mentioned in "Item 1A. Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2016. This overview summarizes the MD&A, which includes the following sections:

• | Second Quarter Review—highlights from the second quarter of 2017 outlining some of the major events that happened during the period and how they affected our financial performance.

• | Results of Operations—an in-depth analysis of our revenues by segment and our expenses from a consolidated perspective for the three and six months ended June 30, 2017. To the extent material to the understanding of segment profitability, we more fully describe the segment expenses per financial statement line item. Financial and statistical data is also included here. As Virgin America was acquired on December 14, 2016, its financial and operational results are reflected in the three and six months ended June 30, 2017 but not in the comparative prior period. However, for comparability purposes, we have added "Combined Comparative" information for the prior year, which is more fully described below. This section includes forward-looking statements regarding our view of the remainder of 2017.

• | Liquidity and Capital Resources—an overview of our financial position, analysis of cash flows, and relevant contractual obligations and commitments.

SECOND QUARTER REVIEW
Our consolidated pretax income was $479 million during the second quarter of 2017, compared to $420 million in the second quarter of 2016. The increase in pretax income of $59 million was primarily driven by an increase in revenues of $608 million, partially offset by $390 million increase in non-fuel expense and $143 million increase in fuel expense.
As we completed the acquisition of Virgin America on December 14, 2016, our results of operations for the three months ended June 30, 2017 include those of Virgin America and the impact of purchase accounting. Our results of operations for the three months ended June 30, 2016 do not include those of Virgin America.
See “Results of Operations” below for further discussion of changes in revenues and operating expenses and our reconciliation of non-GAAP measures to the most directly comparable GAAP measure.
Operations Performance
During the second quarter of 2017, our on-time performance was 82.4% for Alaska, 67.1% for Virgin America and 82.6% for Horizon. Air traffic control issues and airport runway construction have negatively impacted our on-time performance as have pilot shortages at Horizon. These on-time results are lower than we would like them to be, given our high standard of running an excellent operation. Our operations teams are focused on working through these issues to improve our on-time performance for the remainder of 2017.
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New Markets
We launched nine new routes during the quarter and announced 10 new routes, including obtaining final approval from the Department of Transportation for three routes to Mexico City. In total, we have announced approximately 40 new markets since the acquisition of Virgin America as we begin to realize the network and revenue synergies from bringing our two airlines together.
Shareholder Return
During the second quarter of 2017, we paid cash dividends of $37 million and repurchased 256,680 shares for $22 million.
Labor Update
Each of our represented groups, other than aircraft technicians, at Alaska has filed with the National Mediation Board for single carrier status which allows for Virgin America teammates to be represented by unions that currently represent Alaska's workgroups and enables work toward joint collective bargaining agreements.
We have been in negotiations with our pilots on an agreement. We were not able to come to an agreement during mediation, so Alaska and the Air Line Pilot Association will be presenting their positions to an arbitration panel in the third quarter. The decision from the arbitrator will be final and we believe a decision will come some time in the fourth quarter of 2017. Industry pay for pilots has increased substantially over the past few years and we expect this contract will increase our annual wages and benefits costs by approximately $140 million.
Outlook
We completed the acquisition of Virgin America on December 14, 2016, positioning us as the fifth largest airline in the U.S. with a unique ability to serve West Coast travelers. The acquisition of Virgin America provides a platform for growth of our low-fare, premium product, a powerful West Coast network for our guests and enhanced international partnerships. Additionally, Virgin America provides access to constrained gates, particularly on the East Coast, creating increased utility for our guests.
In 2017 and beyond, we are focused on the successful integration of Virgin America, while working towards obtaining a Single Operating Certificate ("SOC"). We currently expect to receive a SOC in early 2018. We also expect to be on a single Passenger Service System ("PSS"), or more commonly known as the reservations system, in the second quarter of 2018. This has been accelerated from later in 2018 and is expected to bring forward approximately $20 million of revenue synergies into 2018. Our priority throughout the integration process is to run our airlines well and maintain a safe and compliant operation, while providing a great experience for our guests. The combined airline will adopt Alaska’s name and logo, retiring the Virgin America name sometime in 2019. Over the next few years we will focus on enhancing our guest experience and will adopt certain aspects of Virgin America’s brand elements, including enhanced inflight connectivity, inflight entertainment content, mood lighting, music and the relentless desire to make flying a different experience for guests. We will continue to enhance our fresh, healthy, West Coast-inspired onboard food and beverage menus. This year, Alaska First Class guests will be able to pre-select meals before they fly. Alaska’s main cabin guests will also be able to pre-pay for their meals in advance in 2018, with Airbus flights soon to follow. Our onboard Free Chat service and free entertainment will be added to Airbus flights in August 2017. We also plan to expand the premium class offering on our Airbus fleet beginning in 2018 and have our entire fleet equipped with high-speed satellite Wi-Fi by early 2020.
In 2018, Alaska Mileage Plan™ will become our sole loyalty program, offering guests more rewards, an expansive global partner network and the only major airline loyalty program that still rewards a mile flown with a mile earned on Alaska and Virgin America flights.
We intend to minimize any disruption to our guests during the integration efforts by being transparent about the progress we are making and how the changes may affect them. Employee engagement throughout the integration will remain a top priority as well, ensuring that employees remain engaged, informed and excited about the changes. We will remain focused on capturing the value and synergies created by combining these two great airlines.
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During the quarter we entered into an agreement with the International Brotherhood of Teamsters to amend the eight-year contract with Horizon's pilots, which will provide Horizon the ability to attract and retain the best pilots in the regional industry. The agreement contains several provisions, including a ratification bonus of approximately $9 million, and higher pay rates, which are included in the quarter's financial results.
Currently, we expect to grow our combined network capacity in 2017 by approximately 8%. The growth rate compares 2017 system-wide capacity to historical Air Group and Virgin America combined capacity in 2016. This compares to a 10.2% combined annual growth in 2016 on the same basis. Current schedules indicate competitive capacity will increase by approximately 2% in the third quarter of 2017 compared to the prior year. We believe that our product, our operation, our low-cost structure, our engaged employees, our award-winning service, and our award-winning Mileage Plan™ and Elevate® programs, combined with our strong balance sheet, give us the ability to compete effectively in our markets.
Our current expectations for capacity and CASM excluding fuel and special items are summarized below. These expectations are from a "Combined Comparative" perspective, calculated as the sum of historical results for Alaska Air Group and Virgin America for the 2016 comparative periods:

| Forecast Q3 2017 |  | Q3 2016 Combined Comparative(a) | % Change
Capacity (ASMs in millions) | 16,310 - 16,360 |  | 15,079 | ~ 8%
Cost per ASM excluding fuel and special items (cents) | 8.00¢ - 8.05¢ |  | 7.90¢ | ~ 1.5%
Fuel gallons (millions) | 208 |  | 192 | ~ 8%
Economic fuel cost per gallon | $1.76 |  | $1.57 | ~ 12%

| Forecast Full Year 2017 |  | 2016 Combined Comparative(a) | % Change
Capacity (ASMs in millions) | 62,455 - 62,610 |  | 57,953 | ~ 8%
Cost per ASM excluding fuel and special items (cents) (e) | 8.07¢ - 8.11¢ |  | 8.04¢ | ~0.5%
Fuel gallons (millions) | 805 |  | 739 | ~ 9%
Economic fuel cost per gallon(b) | (b) |  | $1.54 | (b)

(a) | Refer to our Investor Update issued on April 12, 2017 on Form 8-K for further details of the calculation of the three and six months ended June 30, 2016 combined data.

(b) | Because of the volatility of fuel prices, we do not provide full-year economic fuel estimates.

RESULTS OF OPERATIONS
ADJUSTED (NON-GAAP) RESULTS AND PER-SHARE AMOUNTS
We believe disclosure of earnings excluding the impact of merger-related costs, mark-to-market gains or losses or other individual special revenues or expenses is useful information to investors because:

• | By excluding fuel expense and certain special items (including merger-related costs) from our unit metrics, we believe it provides management better visibility into the results of operations and our non-fuel cost initiatives. Our industry is highly competitive and is characterized by high fixed costs, so even a small reduction in non-fuel operating costs can lead to a significant improvement in operating results. In addition, we believe that all domestic carriers are similarly impacted by changes in jet fuel costs over the long run, so it is important for management (and thus investors) to understand the impact of (and trends in) company-specific cost drivers, such as labor rates and productivity, airport costs, maintenance costs, etc., which are more controllable by management.

• | Cost per ASM ("CASM") excluding fuel and certain special items, such as merger-related costs, is one of the most important measures used by management and by the Air Group Board of Directors in assessing quarterly and annual cost performance.

• | Adjusted income before income tax and CASM excluding fuel (and other items as specified in our plan documents) are important metrics for the employee incentive plan, which covers the majority of Air Group employees.

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• | CASM excluding fuel and certain special items is a measure commonly used by industry analysts and we believe it is an important metric by which they compare our airlines to others in the industry. The measure is also the subject of frequent questions from investors.

• | Disclosure of the individual impact of certain noted items provides investors the ability to measure and monitor performance both with and without these special items. We believe that disclosing the impact of certain items, such as merger-related costs and mark-to-market hedging adjustments, is important because it provides information on significant items that are not necessarily indicative of future performance. Industry analysts and investors consistently measure our performance without these items for better comparability between periods and among other airlines.

• | Although we disclose our passenger unit revenues, we do not (nor are we able to) evaluate unit revenues excluding the impact that changes in fuel costs have had on ticket prices. Fuel expense represents a large percentage of our total operating expenses. Fluctuations in fuel prices often drive changes in unit revenues in the mid-to-long term. Although we believe it is useful to evaluate non-fuel unit costs for the reasons noted above, we would caution readers of these financial statements not to place undue reliance on unit costs excluding fuel as a measure or predictor of future profitability because of the significant impact of fuel costs on our business.

Although we are presenting these non-GAAP amounts for the reasons above, investors and other readers should not necessarily conclude that these amounts are non-recurring, infrequent, or unusual in nature.
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OPERATING STATISTICS SUMMARY
Below are statistics we use to measure operating performance. As the acquisition closed on December 14, 2016, Consolidated and Mainline amounts presented below include Virgin America results for the three and six months ended June 30, 2017 and not for the comparative prior period.

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | Change(d) |  | 2017 |  | 2016 |  | Change(d)
Consolidated Operating Statistics:(a) |  |  |  |  |  |  |  |  |  |  |
Revenue passengers (000) | 11,400 |  | 8,647 |  | 31.8% |  | 21,417 |  | 16,482 |  | 29.9%
RPMs (000,000) "traffic" | 13,554 |  | 9,397 |  | 44.2% |  | 25,262 |  | 17,968 |  | 40.6%
ASMs (000,000) "capacity" | 15,612 |  | 11,062 |  | 41.1% |  | 30,006 |  | 21,515 |  | 39.5%
Load factor | 86.8% |  | 84.9% |  | 1.9 pts |  | 84.2% |  | 83.5% |  | 0.7 pts
Yield | 13.33¢ |  | 13.44¢ |  | (0.8)% |  | 13.03¢ |  | 13.34¢ |  | (2.3)%
PRASM | 11.57¢ |  | 11.42¢ |  | 1.3% |  | 10.97¢ |  | 11.14¢ |  | (1.5)%
RASM | 13.46¢ |  | 13.51¢ |  | (0.4)% |  | 12.83¢ |  | 13.21¢ |  | (2.9)%
CASM excluding fuel and special items(b) | 7.94¢ |  | 7.78¢ |  | 2.1% |  | 8.15¢ |  | 8.14¢ |  | 0.1%
Economic fuel cost per gallon(b) | $1.71 |  | $1.53 |  | 11.8% |  | $1.75 |  | $1.41 |  | 24.1%
Fuel gallons (000,000) | 201 |  | 138 |  | 45.7% |  | 385 |  | 270 |  | 42.6%
ASMs per fuel gallon | 77.7 |  | 80.2 |  | (3.1)% |  | 77.9 |  | 79.7 |  | (2.3)%
Average full-time equivalent employees (FTEs) | 19,745 |  | 14,470 |  | 36.5% |  | 19,214 |  | 14,414 |  | 33.3%
Mainline Operating Statistics: |  |  |  |  |  |  |  |  |  |  |
Revenue passengers (000) | 8,950 |  | 6,282 |  | 42.5% |  | 16,733 |  | 11,925 |  | 40.3%
RPMs (000,000) "traffic" | 12,525 |  | 8,456 |  | 48.1% |  | 23,352 |  | 16,172 |  | 44.4%
ASMs (000,000) "capacity" | 14,341 |  | 9,875 |  | 45.2% |  | 27,602 |  | 19,229 |  | 43.5%
Load factor | 87.3% |  | 85.6% |  | 1.7 pts |  | 84.6% |  | 84.1% |  | 0.5 pts
Yield | 12.42¢ |  | 12.25¢ |  | 1.4% |  | 12.11¢ |  | 12.14¢ |  | (0.2)%
PRASM | 10.85¢ |  | 10.49¢ |  | 3.4% |  | 10.25¢ |  | 10.21¢ |  | 0.4%
RASM | 12.76¢ |  | 12.61¢ |  | 1.2% |  | 12.13¢ |  | 12.31¢ |  | (1.5)%
CASM excluding fuel and special items(b) | 7.15¢ |  | 6.88¢ |  | 3.9% |  | 7.33¢ |  | 7.18¢ |  | 2.1%
Economic fuel cost per gallon(b) | $1.70 |  | $1.52 |  | 11.8% |  | $1.74 |  | $1.40 |  | 24.3%
Fuel gallons (000,000) | 179 |  | 118 |  | 51.7% |  | 343 |  | 231 |  | 48.5%
ASMs per fuel gallon | 80.3 |  | 83.7 |  | (4.1)% |  | 80.5 |  | 83.2 |  | (3.2)%
Average FTEs | 15,447 |  | 11,261 |  | 37.2% |  | 15,227 |  | 11,192 |  | 36.1%
Aircraft utilization | 11.4 |  | 10.8 |  | 5.6% |  | 11.1 |  | 10.7 |  | 3.7%
Average aircraft stage length | 1,294 |  | 1,177 |  | 9.9% |  | 1,295 |  | 1,195 |  | 8.4%
Operating fleet | 221 |  | 152 |  | 69 a/c |  | 221 |  | 152 |  | 69 a/c
Regional Operating Statistics:(c) |  |  |  |  |  |  |  |  |  |  |
Revenue passengers (000) | 2,450 |  | 2,365 |  | 3.6% |  | 4,685 |  | 4,558 |  | 2.8%
RPMs (000,000) "traffic" | 1,030 |  | 941 |  | 9.5% |  | 1,910 |  | 1,796 |  | 6.3%
ASMs (000,000) "capacity" | 1,270 |  | 1,187 |  | 7.0% |  | 2,404 |  | 2,287 |  | 5.1%
Load factor | 81.1% |  | 79.3% |  | 1.8 pts |  | 79.4% |  | 78.5% |  | 0.9 pts
Yield | 24.30¢ |  | 24.17¢ |  | 0.5% |  | 24.22¢ |  | 24.13¢ |  | 0.4%
PRASM | 19.70¢ |  | 19.16¢ |  | 2.8% |  | 19.24¢ |  | 18.95¢ |  | 1.5%
Operating fleet | 78 |  | 69 |  | 9 a/c |  | 78 |  | 69 |  | 9 a/c

(a) | Except for FTEs, data includes information related to third-party regional capacity purchase flying arrangements.

(b) | See reconciliation of this non-GAAP measure to the most directly related GAAP measure in the accompanying pages.

(c) | Data presented includes information related to flights operated by Horizon and third-party carriers.

(d) | See Combined Comparative information in the accompanying pages for year-over-year comparisons including Virgin America.

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COMPARISON OF THREE MONTHS ENDED JUNE 30, 2017 TO THREE MONTHS ENDED JUNE 30, 2016
Our consolidated net income for the three months ended June 30, 2017 was $296 million, or $2.38 per diluted share, compared to net income of $260 million, or $2.10 per diluted share, for the three months ended June 30, 2016. As the acquisition of Virgin America closed on December 14, 2016, our financial results include results of Virgin America for the three months ended June 30, 2017, but not for the comparable prior periods.
Excluding the impact of merger-related costs and mark-to-market fuel hedge adjustments, our adjusted net income for the second quarter of 2017 was $312 million, or $2.51 per diluted share, compared to an adjusted net income of $263 million, or $2.12 per diluted share, in the second quarter of 2016. The following tables reconcile our adjusted net income and adjusted earnings per diluted share ("EPS") during the three months ended June 30, 2017 and 2016 to amounts as reported in accordance with GAAP:

| Three Months Ended June 30,
| 2017 |  | 2016
(in millions, except per share amounts) | Dollars |  | Diluted EPS |  | Dollars |  | Diluted EPS
Reported GAAP net income | $ | 296 |  |  | $ | 2.38 |  |  | $ | 260 |  |  | $ | 2.10 |
Mark-to-market fuel hedge adjustments | 2 |  |  | 0.02 |  |  | (10 | ) |  | (0.08 | )
Special items—merger-related costs | 24 |  |  | 0.19 |  |  | 14 |  |  | 0.11 |
Income tax effect on special items and fuel hedge adjustments | (10 | ) |  | (0.08 | ) |  | (1 | ) |  | (0.01 | )
Non-GAAP adjusted net income and per-share amounts | $ | 312 |  |  | $ | 2.51 |  |  | $ | 263 |  |  | $ | 2.12 |

CASM reconciliation is summarized below:

| Three Months Ended June 30,
(in cents) | 2017 |  | 2016 |  | % Change
Consolidated: |  |  |  |  |
CASM |  | 10.31 | ¢ |  |  | 9.73 | ¢ |  | 6.0 | %
Less the following components: |  |  |  |  |  |
Aircraft fuel, including hedging gains and losses | 2.21 |  |  | 1.82 |  |  | 21.4 | %
Special items—merger-related costs | 0.16 |  |  | 0.13 |  |  | 23.1 | %
CASM excluding fuel and special items |  | 7.94 | ¢ |  |  | 7.78 | ¢ |  | 2.1 | %
Mainline: |  |  |  |  |
CASM |  | 9.45 | ¢ |  |  | 8.74 | ¢ |  | 8.1 | %
Less the following components: |  |  |  |  |  |
Aircraft fuel, including hedging gains and losses | 2.13 |  |  | 1.72 |  |  | 23.8 | %
Special items—merger-related costs | 0.17 |  |  | 0.14 |  |  | 21.4 | %
CASM excluding fuel and special items |  | 7.15 | ¢ |  |  | 6.88 | ¢ |  | 3.9 | %

We believe that analysis of specific financial and operational results on a combined basis provides more meaningful year-over-year comparisons. The discussion below includes "Combined Comparative" results for the three months ended June 30, 2016, determined as the sum of the historical consolidated results of Air Group and of Virgin America. Virgin America's financial information has been conformed to reflect Air Group's historical financial statement presentation. This information does not purport to reflect what our financial and operational results would have been had the acquisition been consummated at the beginning of the periods presented.
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COMBINED COMPARATIVE OPERATING STATISTICS

| Three Months Ended June 30,
| 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | Change
Consolidated: |  |  |  |  |  |  |  |  |
Revenue passengers (in 000) | 11,400 |  | 8,647 |  | 2,087 |  | 10,734 |  | 6.2%
RPMs (in 000,000) | 13,554 |  | 9,397 |  | 3,165 |  | 12,562 |  | 7.9%
ASMs (in 000,000) | 15,612 |  | 11,062 |  | 3,689 |  | 14,751 |  | 5.8%
Load Factor | 86.8% |  | 84.9% |  | (a) |  | 85.2% |  | 1.6 pts
PRASM | 11.57¢ |  | 11.42¢ |  | (a) |  | 11.16¢ |  | 3.7%
RASM | 13.46¢ |  | 13.51¢ |  | (a) |  | 13.01¢ |  | 3.5%
CASMex | 7.94¢ |  | 7.78¢ |  | (a) |  | 7.69¢ |  | 3.3%
FTEs | 19,745 |  | 14,470 |  | 2,786 |  | 17,256 |  | 14.4%
Mainline: |  |  |  |  |  |  |  |  |
RPMs (in 000,000) | 12,525 |  | 8,456 |  | 3,165 |  | 11,621 |  | 7.8%
ASMs (in 000,000) | 14,341 |  | 9,875 |  | 3,689 |  | 13,564 |  | 5.7%
Load Factor | 87.3% |  | 85.6% |  | (a) |  | 85.7% |  | 1.6 pts
PRASM | 10.85¢ |  | 10.49¢ |  | (a) |  | 10.46¢ |  | 3.7%

(a) | 2016 Combined operating statistics have been recalculated using the combined results.

COMBINED COMPARATIVE OPERATING REVENUES
Total operating revenues increased $608 million, or 41%, during the second quarter of 2017 compared to the same period in 2016. On a Combined Comparative basis, total operating revenues increased $183 million or 10%. The changes, including the reconciliation of the impact of Virgin America on the comparative results, are summarized in the following table:

| Three Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Passenger |  |  |  |  |  |  |  |  |  |  |
Mainline | $ | 1,556 |  |  | $ | 1,036 |  |  | $ | 384 |  |  | $ | 1,420 |  |  | $ | 136 |  |  | 10 | %
Regional | 251 |  |  | 227 |  |  | — |  |  | 227 |  |  | 24 |  |  | 11 | %
Total passenger revenue | 1,807 |  |  | 1,263 |  |  | 384 |  |  | 1,647 |  |  | 160 |  |  | 10 | %
Freight and mail | 32 |  |  | 27 |  |  | — |  |  | 27 |  |  | 5 |  |  | 19 | %
Other—net | 263 |  |  | 204 |  |  | 41 |  |  | 245 |  |  | 18 |  |  | 7 | %
Total operating revenues | $ | 2,102 |  |  | $ | 1,494 |  |  | $ | 425 |  |  | $ | 1,919 |  |  | $ | 183 |  |  | 10 | %

Passenger Revenue—Mainline
On a consolidated basis, Mainline passenger revenue for the second quarter of 2017 increased by $520 million, or 50% on a 45.2% increase in capacity, driven by the acquisition of Virgin America, and a 3.4% increase in unit revenues. On a Combined Comparative basis, Mainline passenger revenue for the second quarter of 2017 increased by 10%, due to a 5.7% increase in capacity, as well as a 3.7% increase in unit revenues combined with higher frequent flyer revenue compared to the combined second quarter of 2016. The increase in capacity was driven primarily by new routes and aircraft added to our fleet since the second quarter of 2016. The increase in PRASM was driven by higher ticket yields and an increase in load factors. The increase in frequent flyer revenue was driven by higher loyalty redemption and companion certificate revenue attributable to promotions during the period.
Passenger Revenue—Regional
Regional passenger revenue increase d 11% compared to the second quarter of 2016 primarily, driven by a 7% increase in capacity on a 2.8% increase in PRASM.
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Other—Net
Other—net revenue increased $59 million, or 29%, from the second quarter of 2016. On a Combined Comparative basis, Other—net revenue increased $18 million, or 7%. Frequent flyer revenue contributed $20 million of the increase, primarily driven by more miles sold to our non-airline partners in the Mileage Plan program. The remainder of the increase was due to higher ancillary revenues.
COMBINED COMPARATIVE OPERATING EXPENSES
Total operating expenses increased $533 million, or 50%, compared to the second quarter of 2016. On a Combined Comparative basis, total operating expenses increased $179 million, or 13%. We believe it is useful to summarize operating expenses as follows, which is consistent with the way expenses are reported internally and evaluated by management:

| Three Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Fuel expense | $ | 344 |  |  | $ | 201 |  |  | $ | 77 |  |  | $ | 278 |  |  | $ | 66 |  |  | 24 | %
Non-fuel expenses | 1,241 |  |  | 861 |  |  | 273 |  |  | 1,134 |  |  | 107 |  |  | 9 | %
Special items—merger-related costs | 24 |  |  | 14 |  |  | 4 |  |  | 18 |  |  | 6 |  |  | 33 | %
Total operating expenses | $ | 1,609 |  |  | $ | 1,076 |  |  | $ | 354 |  |  | $ | 1,430 |  |  | $ | 179 |  |  | 13 | %

Fuel Expense
Aircraft fuel expense includes both raw fuel expense (as defined below) plus the effect of mark-to-market adjustments to our fuel hedge portfolio included in our consolidated statement of operations as the value of that portfolio increases and decreases. Our aircraft fuel expense can be volatile, because it includes these gains or losses in the value of the underlying instrument as crude oil prices and refining margins increase or decrease. Raw fuel expense is defined as the price that we generally pay at the airport, or the “into-plane” price, including taxes and fees. Raw fuel prices are impacted by world oil prices and refining costs, which can vary by region in the U.S. Raw fuel expense approximates cash paid to suppliers and does not reflect the effect of our fuel hedges.
Aircraft fuel expense increased $143 million, or 71% compared to the second quarter of 2016. On a Combined Comparative basis, aircraft fuel expense increased $66 million or 24%. The elements of the change are illustrated in the following table:

| Three Months Ended June 30,
| 2017 |  | 2016 as Reported |  | 2016 Combined
(in millions, except for per gallon amounts) | Dollars |  | Cost/Gal |  | Dollars |  | Cost/Gal |  | Dollars |  | Cost/Gal
Raw or "into-plane" fuel cost | $ | 337 |  |  | $ | 1.69 |  |  | $ | 207 |  |  | $ | 1.50 |  |  | $ | 281 |  |  | $ | 1.50 |
Losses on settled hedges | 5 |  |  | 0.02 |  |  | 4 |  |  | 0.03 |  |  | 8 |  |  | 0.04 |
Consolidated economic fuel expense | 342 |  |  | 1.71 |  |  | 211 |  |  | 1.53 |  |  | $ | 289 |  |  | $ | 1.54 |
Mark-to-market fuel hedge adjustments | 2 |  |  | 0.01 |  |  | (10 | ) |  | (0.07 | ) |  | (11 | ) |  | (0.05 | )
GAAP fuel expense | $ | 344 |  |  | $ | 1.72 |  |  | $ | 201 |  |  | $ | 1.46 |  |  | $ | 278 |  |  | $ | 1.49 |
Fuel gallons | 201 |  |  |  |  | 138 |  |  |  |  | 187 |  |  |

On a Combined Comparative basis, raw fuel expense per gallon for the three months ended June 30, 2017 increased by 13% due to higher West Coast jet fuel prices. West Coast jet fuel prices are impacted by both the price of crude oil, as well as refining margins associated with the conversion of crude oil to jet fuel. The increase in raw fuel price per gallon during the second quarter of 2017 was primarily driven by a 6% increase in crude oil prices and an increase in refining margins of 17%, when compared to the prior year. Fuel gallons consumed increased by 14 million gallons, or 7.5%, in line with the increase in capacity.
We also evaluate economic fuel expense, which we define as raw fuel expense adjusted for the cash we receive from, or pay to, hedge counterparties for hedges that settle during the period, and for the premium expense that we paid for those contracts. A key difference between aircraft fuel expense and economic fuel expense is the timing of gain or loss recognition on our hedge
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portfolio. When we refer to economic fuel expense, we include gains and losses only when they are realized for those contracts that were settled during the period based on their original contract terms. We believe this is the best measure of the effect that fuel prices are currently having on our business because it most closely approximates the net cash outflow associated with purchasing fuel for our operations. Accordingly, many industry analysts evaluate our results using this measure, and it is the basis for most internal management reporting and incentive pay plans.
We recognized total losses of $5 million and $4 million for hedges that settled during the second quarter of 2017 and 2016 as reported. These amounts represent the net cash paid, including the premium expense recognized for those hedges.
Non-fuel Expenses and Non-special Items
The table below provides the reconciliation of the impact of Virgin America on the comparative results for each of our operating expense line items, excluding fuel and special items. Significant operating expense variances from 2016 are more fully described below.

| Three Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Wages and benefits | $ | 469 |  |  | $ | 332 |  |  | $ | 75 |  |  | $ | 407 |  |  | $ | 62 |  |  | 15 | %
Variable incentive pay | 27 |  |  | 32 |  |  | 8 |  |  | 40 |  |  | (13 | ) |  | (33 | )%
Aircraft maintenance | 96 |  |  | 65 |  |  | 17 |  |  | 82 |  |  | 14 |  |  | 17 | %
Aircraft rent | 69 |  |  | 26 |  |  | 48 |  |  | 74 |  |  | (5 | ) |  | (7 | )%
Landing fees and other rentals | 99 |  |  | 63 |  |  | 28 |  |  | 91 |  |  | 8 |  |  | 9 | %
Contracted services | 77 |  |  | 60 |  |  | 16 |  |  | 76 |  |  | 1 |  |  | 1 | %
Selling expenses | 97 |  |  | 55 |  |  | 32 |  |  | 87 |  |  | 10 |  |  | 11 | %
Depreciation and amortization | 90 |  |  | 92 |  |  | 10 |  |  | 102 |  |  | (12 | ) |  | (12 | )%
Food and beverage service | 50 |  |  | 31 |  |  | 14 |  |  | 45 |  |  | 5 |  |  | 11 | %
Third-party regional carrier expense | 27 |  |  | 24 |  |  | — |  |  | 24 |  |  | 3 |  |  | 13 | %
Other | 140 |  |  | 81 |  |  | 25 |  |  | 106 |  |  | 34 |  |  | 32 | %
Total non-fuel and non-special operating expenses | $ | 1,241 |  |  | $ | 861 |  |  | 273 |  |  | 1,134 |  |  | 107 |  |  | 9 | %

Wages and Benefits
Wages and benefits increased during the second quarter of 2017 by $137 million, or 41%. On a Combined Comparative basis, total wages and benefits increased by $62 million, or 15%. The primary components of wages and benefits, including a reconciliation of 2016 on a Combined Comparative basis, are shown in the following table:

| Three Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Wages | $ | 359 |  |  | $ | 249 |  |  | $ | 58 |  |  | $ | 307 |  |  | $ | 52 |  |  | 17 | %
Pension—Defined benefit plans | 8 |  |  | 6 |  |  | — |  |  | 6 |  |  | 2 |  |  | 33 | %
Defined contribution plans | 23 |  |  | 16 |  |  | 7 |  |  | 23 |  |  | — |  |  | — | %
Medical and other benefits | 52 |  |  | 42 |  |  | 6 |  |  | 48 |  |  | 4 |  |  | 8 | %
Payroll taxes | 27 |  |  | 19 |  |  | 4 |  |  | 23 |  |  | 4 |  |  | 17 | %
Total wages and benefits | $ | 469 |  |  | $ | 332 |  |  | $ | 75 |  |  | $ | 407 |  |  | $ | 62 |  |  | 15 | %

On a Combined Comparative basis, wages increased 17% with a 14% increase in FTEs. The increase in FTEs is attributable to the growth in our business, as well as bringing certain airport ground service positions in-house that were previously reflected in our Contracted services expense. Second quarter of 2017 also includes $9 million of ratification bonus expense in connection with the agreement reached with Horizon's pilots.
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Variable Incentive Pay
Variable incentive pay decreased by $5 million, or 16%, during the second quarter of 2017 compared to the same period in 2016. On a Combined Comparative basis, variable incentive pay decreased by $13 million, or 33%. This decrease is primarily due to expectations of lower performance-based pay as compared to the prior year based on how we are tracking in relation to our current year's goals.
Aircraft Maintenance
Aircraft maintenance increased by $31 million, or 48%, during the second quarter of 2017 compared to the same period in 2016. On a Combined Comparative basis, aircraft maintenance increased by $14 million, or 17%. This increase was primarily driven by a higher volume of scheduled engine maintenance events as compared to the prior period.
Selling Expenses
Selling expenses increased by $42 million, or 76%, during the second quarter of 2017 compared to the same period in 2016. On a Combined Comparative basis, selling expenses increased by $10 million, or 11%. This increase was primarily driven by higher credit card and distribution fees due to higher revenue volumes, and increased promotional and advertising activities.
Depreciation and Amortization
Depreciation and amortization expense decreased by $2 million, or 2%, during the second quarter of 2017 compared to the same period in 2016. On a Combined Comparative basis, depreciation and amortization expense decreased by $12 million, or 12%. This decrease was primarily driven by a change in the estimated useful lives of certain B737 operating aircraft and related parts from 20 years to 25 years, which was effective October 1, 2016, partially offset by aircraft additions since June 30, 2016.
Other Operating Expenses
Other operating expenses increased by $59 million, or 73%, during the second quarter of 2017 compared to the same period in 2016. On a Combined Comparative basis, other operating expenses increased by $34 million, or 32%. The increase is primarily due to additional costs incurred for crew hotel, training, travel, IT and passenger remuneration costs. These increases were driven by the growth in our business and increased costs from irregular operations during the quarter. During the three months ended June 30, 2016 we also received an insurance claim reimbursement that reduced the expense for the period.
Special Items—Merger-Related Costs
We recorded special items of $24 million for merger-related costs associated with our acquisition of Virgin America in the second quarter of 2017, compared to $14 million as reported and $18 million on a Combined Comparative basis in the three months ended June 30, 2016. Costs incurred in the second quarter of 2017 consisted primarily of severance and retention costs.
Nonoperating Income (Expense)
During the second quarter of 2017 we recorded nonoperating expense of $14 million compared to income of $2 million in the same period in 2016. On a Combined Comparative basis, nonoperating expense increased by $11 million, primarily due to interest expense on the debt issued in the fourth quarter of 2016 to finance the acquisition of Virgin America.
Additional Segment Information
Refer to Note 9 of the consolidated financial statements for a detailed description of each segment. Below is a summary of each segment's profitability.
Mainline
Mainline recorded pretax profit of $490 million in the second quarter of 2017 compared to $392 million in the second quarter of 2016. On a Combined Comparative basis, Mainline pretax profit increased by $29 million. The table below provides the reconciliation of the impact of Virgin America on the comparative results for our Mainline segment, excluding merger-related costs and mark-to-market fuel-hedge accounting charges:
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| Three Months Ended June 30, |  |
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Change
Mainline |  |  |  |  |  |  |  |  |
Operating revenues | $ | 1,831 |  |  | $ | 1,246 |  |  | $ | 425 |  |  | $ | 1,671 |  |  | $ | 160 |
Non-fuel operating expenses | 1,026 |  |  | 679 |  |  | 273 |  |  | 952 |  |  | 74 |
Economic fuel | 304 |  |  | 180 |  |  | 78 |  |  | 258 |  |  | 46 |
Operating income | 501 |  |  | 387 |  |  | 74 |  |  | 461 |  |  | 40 |
Nonoperating income (expense) | (11 | ) |  | 5 |  |  | (5 | ) |  | — |  |  | (11 | )
Pretax profit | $ | 490 |  |  | $ | 392 |  |  | $ | 69 |  |  | $ | 461 |  |  | $ | 29 |

The $29 million increase in Combined Comparative pretax profit was primarily driven by a $160 million increase in operating revenues, partially offset by a $74 million increase in non-fuel operating expenses and $46 million increase in economic fuel expense. The increase in operating revenues was primarily driven by higher capacity, higher PRASM and increase in frequent flyer revenue as described above. The increase in non-fuel expense was primarily driven by higher wages to support our growth and higher other operating expenses as described above. The increase in economic fuel expense was driven by higher raw fuel costs.
Regional
Regional recorded a pretax profit of $26 million in the second quarter of 2017 compared to $24 million in the second quarter of 2016. The increase in operating revenues of $24 million as described in Passenger revenue—Regional was partially offset by higher costs to support the increase in capacity.
Horizon
Horizon incurred a pretax loss of $9 million in the second quarter of 2017 compared to income of $7 million in the second quarter of 2016. The pretax loss was primarily driven by a $15 million increase in non-fuel operating expenses attributable to higher wage expense as a result of the increase in FTEs, and $9 million of ratification bonus expense in connection with the agreement reached with Horizon's pilots during the quarter.
COMPARISON OF SIX MONTHS ENDED JUNE 30, 2017 TO SIX MONTHS ENDED JUNE 30, 2016
Our consolidated net income for the six months ended June 30, 2017 was $395 million, or $3.17 per diluted share, compared to net income of $444 million, or $3.56 per diluted share, for the six months ended June 30, 2016. As the acquisition of Virgin America closed on December 14, 2016, our financial results include results of Virgin America for the six months ended June 30, 2017, but not for the prior periods.
Excluding the impact of merger-related costs and mark-to-market fuel hedge adjustments, our adjusted net income for the six months ended June 30, 2017 was $443 million, or $3.56 per diluted share, compared to an adjusted net income of $445 million, or $3.57 per diluted share, in the six months ended June 30, 2016. The following tables reconcile our adjusted net income and diluted EPS during the six months ended June 30, 2017 and 2016 to amounts as reported in accordance with GAAP:

| Six Months Ended June 30,
| 2017 |  | 2016
(in millions, except per share amounts) | Dollars |  | Diluted EPS |  | Dollars |  | Diluted EPS
Reported GAAP net income and diluted EPS | $ | 395 |  |  | $ | 3.17 |  |  | $ | 444 |  |  | $ | 3.56 |
Mark-to-market fuel hedge adjustments | 12 |  |  | 0.10 |  |  | (12 | ) |  | (0.10 | )
Special items—merger-related costs | 64 |  |  | 0.51 |  |  | 14 |  |  | 0.12 |
Income tax effect on special items and fuel hedge adjustments | (28 | ) |  | (0.22 | ) |  | (1 | ) |  | (0.01 | )
Non-GAAP adjusted net income and diluted EPS | $ | 443 |  |  | $ | 3.56 |  |  | $ | 445 |  |  | $ | 3.57 |

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Our operating costs per ASM are summarized below:

| Six Months Ended June 30,
(in cents) | 2017 |  | 2016 |  | % Change
Consolidated: |  |  |  |  |
CASM |  | 10.64 | ¢ |  |  | 9.91 | ¢ |  | 7.4 | %
Less the following components: |  |  |  |  |
Aircraft fuel, including hedging gains and losses | 2.28 |  |  | 1.71 |  |  | 33.3 | %
Special items—merger-related costs | 0.21 |  |  | 0.06 |  |  | 250.0 | %
CASM excluding fuel and special items |  | 8.15 | ¢ |  |  | 8.14 | ¢ |  | 0.1 | %
Mainline: |  |  |  |  |
CASM |  | 9.77 | ¢ |  |  | 8.87 | ¢ |  | 10.1 | %
Less the following components: |  |  |  |  |
Aircraft fuel, including hedging gains and losses | 2.20 |  |  | 1.62 |  |  | 35.8 | %
Special items—merger-related costs | 0.23 |  |  | 0.07 |  |  | 228.6 | %
CASM excluding fuel and special items |  | 7.33 | ¢ |  |  | 7.18 | ¢ |  | 2.1 | %

COMBINED COMPARATIVE OPERATING STATISTICS

| Six Months Ended June 30,
| 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | Change
Consolidated: |  |  |  |  |  |  |  |  |
Revenue passengers (in 000) | 21,417 |  | 16,482 |  | 3,854 |  | 20,336 |  | 5.3%
RPMs (in 000,000) | 25,262 |  | 17,968 |  | 5,780 |  | 23,748 |  | 6.4%
ASMs (in 000,000) | 30,006 |  | 21,515 |  | 6,955 |  | 28,470 |  | 5.4%
Load Factor | 84.2% |  | 83.5% |  | (a) |  | 83.4% |  | 0.8 pts
PRASM | 10.97¢ |  | 11.14¢ |  | (a) |  | 10.92¢ |  | 0.5%
RASM | 12.83¢ |  | 13.21¢ |  | (a) |  | 12.75¢ |  | 0.6%
CASMex | 8.15¢ |  | 8.14¢ |  | (a) |  | 8.01¢ |  | 1.7%
FTEs | 19,214 |  | 14,414 |  | 2,735 |  | 17,149 |  | 12.0%
Mainline: |  |  |  |  |  |  |  |  |
RPMs (in 000,000) | 23,352 |  | 16,172 |  | 5,780 |  | 21,952 |  | 6.4%
ASMs (in 000,000) | 27,602 |  | 19,229 |  | 6,955 |  | 26,184 |  | 5.4%
Load Factor | 84.6% |  | 84.1% |  | (a) |  | 83.8% |  | 0.8 pts
PRASM | 10.25¢ |  | 10.21¢ |  | (a) |  | 10.22¢ |  | 0.3%

(a) | 2016 Combined operating statistics have been recalculated using the combined results.

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COMBINED COMPARATIVE OPERATING REVENUES
Total operating revenues increased $1 billion, or 36%, during the first six months of 2017 compared to the same period in 2016. On a Combined Comparative basis, total operating revenues increased $222 million, or 6%. The changes, including the reconciliation of the impact of Virgin America on the comparative results, are summarized in the following table:

| Six Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Passenger |  |  |  |  |  |  |  |  |  |  |
Mainline | $ | 2,828 |  |  | $ | 1,963 |  |  | $ | 713 |  |  | $ | 2,676 |  |  | $ | 152 |  |  | 6 | %
Regional | 463 |  |  | 433 |  |  | — |  |  | 433 |  |  | 30 |  |  | 7 | %
Total passenger revenue | 3,291 |  |  | 2,396 |  |  | 713 |  |  | 3,109 |  |  | 182 |  |  | 6 | %
Freight and mail | 56 |  |  | 51 |  |  | — |  |  | 51 |  |  | 5 |  |  | 10 | %
Other—net | 504 |  |  | 394 |  |  | 75 |  |  | 469 |  |  | 35 |  |  | 7 | %
Total operating revenues | $ | 3,851 |  |  | $ | 2,841 |  |  | $ | 788 |  |  | $ | 3,629 |  |  | $ | 222 |  |  | 6 | %

Passenger Revenue—Mainline
Mainline passenger revenue for the first six months of 2017 increased 44% on a 43.5% increase in capacity, driven primarily by the acquisition of Virgin America, and flat PRASM compared to the same period in 2016. On a Combined Comparative basis, mainline passenger revenue for the six months ended June 30, 2017 increased 6%, primarily due to a 5.4% increase in capacity on a flat PRASM. The increase in capacity was driven by routes added since June 30, 2016.
Passenger Revenue—Regional
Regional passenger revenue increased by $30 million, or 7%, compared to the first six months of 2016, due to a 5.1% increase in capacity on more regional flying and a 1.5% increase in PRASM.
Other—Net
Other—net revenue increased $110 million, or 28%, from the first six months of 2016. On a Combined Comparative basis, other—net revenue increased $35 million, or 7%. Mileage Plan revenue contributed $30 million of the increase primarily driven by more miles sold to our non-airline partners.
COMBINED COMPARATIVE OPERATING EXPENSES
Total operating expenses increased $1.1 billion, or 50%, compared to the first six months of 2016. On a Combined Comparative basis, total operating expenses increased $374 million, or 13%. We believe it is useful to summarize operating expenses as follows, which is consistent with the way expenses are reported internally and evaluated by management:

| Six Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Fuel expense | $ | 683 |  |  | $ | 368 |  |  | $ | 148 |  |  | $ | 516 |  |  | $ | 167 |  |  | 32 | %
Non-fuel expenses | 2,445 |  |  | 1,751 |  |  | 531 |  |  | 2,282 |  |  | 163 |  |  | 7 | %
Special items—merger-related costs | 64 |  |  | 14 |  |  | 6 |  |  | 20 |  |  | 44 |  |  | 220 | %
Total operating expenses | $ | 3,192 |  |  | $ | 2,133 |  |  | $ | 685 |  |  | $ | 2,818 |  |  | $ | 374 |  |  | 13 | %

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Fuel Expense
Aircraft fuel expense increased $315 million, or 86%, compared to the six months ended June 30, 2016. On a Combined Comparative basis, aircraft fuel expense increased $167 million, or 32%. The elements of the change are illustrated in the following table:

| Six Months Ended June 30,
| 2017 |  | 2016 as Reported |  | 2016 Combined
(in millions, except for per gallon amounts) | Dollars |  | Cost/Gal |  | Dollars |  | Cost/Gal |  | Dollars |  | Cost/Gal
Raw or "into-plane" fuel cost | $ | 663 |  |  | $ | 1.73 |  |  | $ | 372 |  |  | $ | 1.38 |  |  | $ | 503 |  |  | $ | 1.39 |
Losses on settled hedges | 8 |  |  | 0.02 |  |  | 8 |  |  | 0.03 |  |  | 27 |  |  | 0.07 |
Consolidated economic fuel expense | 671 |  |  | 1.75 |  |  | 380 |  |  | 1.41 |  |  | $ | 530 |  |  | $ | 1.46 |
Mark-to-market fuel hedge adjustments | 12 |  |  | 0.03 |  |  | (12 | ) |  | (0.04 | ) |  | (14 | ) |  | (0.03 | )
GAAP fuel expense | $ | 683 |  |  | $ | 1.78 |  |  | $ | 368 |  |  | $ | 1.37 |  |  | $ | 516 |  |  | $ | 1.43 |
Fuel gallons | 385 |  |  |  |  | 270 |  |  |  |  | 362 |  |  |

On a Combined Comparative basis, the raw fuel price per gallon increased 24.5% due to higher West Coast jet fuel prices. West Coast jet fuel prices are impacted by both the price of crude oil, as well as refining margins associated with the conversion of crude oil to jet fuel. The increase in raw fuel price per gallon during the first six months of 2017 was driven by a 25% increase in crude oil prices and a 13% increase in refining margins.
Losses recognized for hedges that settled during the year were $8 million both in 2017 and in 2016 as reported. These amounts represent the cash paid for premium expense, offset by cash received from those hedges.
We currently expect our economic fuel price per gallon to be higher in the third quarter of 2017 compared to the third quarter of 2016 due to our current estimate of higher crude prices and higher refining margins.
Non-fuel Expense and Non- special items
The table below provides the reconciliation of the impact of Virgin America on the comparative results for each of our operating expense line items, excluding fuel and special items. Significant operating expense variances from 2016 are more fully described below.

| Six Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Wages and benefits | $ | 917 |  |  | $ | 668 |  |  | $ | 147 |  |  | $ | 815 |  |  | $ | 102 |  |  | 13 | %
Variable incentive pay | 58 |  |  | 64 |  |  | 14 |  |  | 78 |  |  | (20 | ) |  | (26 | )%
Aircraft maintenance | 183 |  |  | 133 |  |  | 34 |  |  | 167 |  |  | 16 |  |  | 10 | %
Aircraft rent | 134 |  |  | 55 |  |  | 95 |  |  | 150 |  |  | (16 | ) |  | (11 | )%
Landing fees and other rentals | 214 |  |  | 143 |  |  | 55 |  |  | 198 |  |  | 16 |  |  | 8 | %
Contracted services | 158 |  |  | 120 |  |  | 31 |  |  | 151 |  |  | 7 |  |  | 5 | %
Selling expenses | 178 |  |  | 104 |  |  | 62 |  |  | 166 |  |  | 12 |  |  | 7 | %
Depreciation and amortization | 180 |  |  | 180 |  |  | 18 |  |  | 198 |  |  | (18 | ) |  | (9 | )%
Food and beverage service | 95 |  |  | 62 |  |  | 26 |  |  | 88 |  |  | 7 |  |  | 8 | %
Third-party regional carrier expense | 54 |  |  | 47 |  |  | — |  |  | 47 |  |  | 7 |  |  | 15 | %
Other | 274 |  |  | 175 |  |  | 49 |  |  | 224 |  |  | 50 |  |  | 22 | %
Total non-fuel and non-special operating expenses | $ | 2,445 |  |  | $ | 1,751 |  |  | 531 |  |  | 2,282 |  |  | 163 |  |  | 7 | %

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Wages and Benefits
Wages and benefits increased during the first six months of 2017 by $249 million, or 37%, compared to 2016. On a Combined Comparative basis, total wages and benefits increased by $102 million or 13%, compared to 2016. The primary components of wages and benefits are shown in the following table:

| Six Months Ended June 30, |  | Change
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Combined |  | % Combined
Wages | $ | 696 |  |  | $ | 499 |  |  | $ | 113 |  |  | $ | 612 |  |  | $ | 84 |  |  | 14 | %
Pension—Defined benefit plans | 16 |  |  | 13 |  |  | — |  |  | 13 |  |  | 3 |  |  | 23 | %
Defined contribution plans | 48 |  |  | 33 |  |  | 13 |  |  | 46 |  |  | 2 |  |  | 4 | %
Medical and other benefits | 104 |  |  | 85 |  |  | 12 |  |  | 97 |  |  | 7 |  |  | 7 | %
Payroll taxes | 53 |  |  | 38 |  |  | 9 |  |  | 47 |  |  | 6 |  |  | 13 | %
Total wages and benefits | $ | 917 |  |  | $ | 668 |  |  | $ | 147 |  |  | $ | 815 |  |  | $ | 102 |  |  | 13 | %

On a Combined Comparative basis, wages increased $84 million, or 14%, on a 12% increase in FTEs. The increase in FTEs was to support the general growth of our business and increased staffing during irregular operations earlier in 2017. The first six months of 2017 also include $9 million of ratification bonus expense in connection with the agreement reached with Horizon's pilots.
We currently expect wages and benefits to increase for the full year to support the general growth of the business and staff certain airport ground service positions that we began performing internally. Furthermore, as mentioned earlier, we do expect our pilot wages will increase once a final arbitration decision is rendered. Our current unit cost guidance does not include an estimate for these increases at this time. Guidance will be updated after the arbitration decision.
Variable Incentive Pay
Variable incentive pay expense decreased during the first six months of 2017 by $6 million, or 9% compared to 2016. On a Combined Comparative basis, variable incentive pay decreased $20 million, or 26% due to expectations of lower performance-based pay as compared to the prior year based on how we are tracking against our current year's goals.
Aircraft Maintenance
Aircraft maintenance increased $50 million, or 38%, compared to the prior-year period. On a Combined Comparative basis, aircraft maintenance increased by $16 million, or 10% due to more scheduled engine maintenance events than in the prior period.
For the full year, we currently expect aircraft maintenance to be higher as compared to 2016 due to more scheduled engine maintenance events for the period.
Aircraft Rent
Aircraft rent increased by $79 million, or 144%, compared to the prior-year period. On a Combined Comparative basis, aircraft rent decreased by $16 million, or 11%. This decrease was primarily driven by lower rent expense on certain leases at Virgin America from purchase accounting adjustments and the retirement of three leased B737-400 aircraft.
For the full year, we expect aircraft rent to be lower than in 2016 as we retire four more leased B737-400 aircraft and realize the full year benefit of lower rent expense on certain leases at Virgin America.
Other Operating Expenses
Other operating expenses increased by $99 million, or 57%, compared to the first six months of 2016. On a Combined Comparative basis, other operating expenses increased by $50 million, or 22%. The increase was due to higher crew and IT costs, foreign exchange losses, property taxes and costs associated with irregular operations. The first six months of 2016 also included a benefit of an insurance claim reimbursement we received in the prior year.
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For the full year, we expect other expenses to be higher than in 2016 in line with the trends described above.
Special Items—Merger-Related Costs
We recorded special items of $64 million for merger-related costs associated with our acquisition of Virgin America in the first six months of 2017, compared to $14 million as reported and $20 million on a Combined Comparative basis in the first six months of 2016. Costs incurred in the first six months of 2017 consisted primarily of severance and retention costs.
We expect to incur merger-related costs for the remainder of 2017 through 2019.
Nonoperating Income (Expense)
During the first six months of 2017, we had nonoperating expense of $28 million, compared to income of $4 million in the same period in 2016. On a Combined Comparative basis, nonoperating expense increased by $23 million, primarily due to interest expense on the debt issued in the last six months of 2017 to finance the acquisition of Virgin America.
Additional Segment Information
Refer to Note 9 of the condensed consolidated financial statements for a detailed description of each segment. Below is a summary of each segment's profitability.
Mainline
Mainline pretax profit was $705 million in the first six months of 2017, compared to $670 million in the same period in 2016. On a Combined Comparative basis, Mainline pretax profit decreased by $63 million. The table below provides the reconciliation of the impact of Virgin America on the comparative results for our Mainline segment, excluding merger-related costs and mark-to-market fuel-hedge accounting charges:

| Six Months Ended June 30, |  |
(in millions) | 2017 |  | 2016 as Reported |  | 2016 Virgin America |  | 2016 Combined |  | $ Change
Mainline |  |  |  |  |  |  |  |  |
Operating revenues | $ | 3,348 |  |  | $ | 2,368 |  |  | $ | 788 |  |  | $ | 3,156 |  |  | $ | 192 |
Non-fuel operating expenses | 2,024 |  |  | 1,380 |  |  | 531 |  |  | 1,911 |  |  | 113 |
Economic fuel | 596 |  |  | 324 |  |  | 150 |  |  | 474 |  |  | 122 |
Operating income | 728 |  |  | 664 |  |  | 107 |  |  | 771 |  |  | (43 | )
Nonoperating income (expense) | (23 | ) |  | 6 |  |  | (9 | ) |  | (3 | ) |  | (20 | )
Pretax profit | $ | 705 |  |  | $ | 670 |  |  | $ | 98 |  |  | $ | 768 |  |  | $ | (63 | )

The $63 million decrease in Combined Comparative pretax profit was primarily driven by a $122 million increase in Mainline fuel expense and $113 million increase in Mainline non-fuel operating expenses, partially offset by $192 million increase in Mainline passenger revenue. Higher raw fuel prices and an increase in gallons consumed drove the increase in Mainline fuel expense. Non-fuel operating expenses increased due to higher wages to support our growth and higher other operating expenses as described above. Mainline revenue increased due to higher capacity from the new routes we have added over the past twelve months.
Regional
Pretax profit for Alaska Regional was $20 million in the first six months of 2017, compared to $37 million the in the first six months of 2016. The increased Regional revenue was offset by higher expenses to support additional capacity.
Horizon
Horizon incurred a pretax loss of $16 million in the first six months of 2017, compared to pretax profit of $5 million in the same period in 2016. This decrease was driven by higher non-fuel expenses and lower CPA Revenues (100% of which are from Alaska and eliminated in consolidation). Non-fuel expenses increased primarily due to higher wage expense in line with the FTE increase and a $9 million ratification bonus expense in connection with the agreement with Horizon's pilots.
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LIQUIDITY AND CAPITAL RESOURCES
Our primary sources of liquidity are:

• | Our existing cash and marketable securities balance of $1.9 billion, and our expected cash from operations;

• | Our 59 unencumbered aircraft in our operating fleet that could be financed, if necessary;

• | Our combined bank line-of-credit facilities, with no outstanding borrowings, of $400 million. Information about these facilities can be found in Note 5 to the condensed consolidated financial statements.

During the six months ended June 30, 2017, we took free and clear delivery of six B737-900ER aircraft and six E175 aircraft. We made debt payments totaling $159 million and paid dividends totaling $74 million.
The table below presents the major indicators of financial condition and liquidity:

(in millions) | June 30, 2017 |  | December 31, 2016 |  | Change
Cash and marketable securities | $ | 1,922 |  |  | $ | 1,580 |  |  | 21.6 %
Cash, marketable securities, and unused lines of credit as a percentage of trailing twelve months' revenue | 33 | % |  | 31 | % |  | 2 pts
Long-term debt, net of current portion | $ | 2,469 |  |  | $ | 2,645 |  |  | (6.7)%
Shareholders’ equity | $ | 3,264 |  |  | $ | 2,931 |  |  | 11.4%
Long-term debt-to-capital including net present value of aircraft operating lease payments(a) | 55 | % |  | 59 | % |  | (4) pts

(a) | Calculated using the present value of remaining aircraft lease payments for aircraft in our operating fleet as of the balance sheet date.

The following discussion summarizes the primary drivers of the increase in our cash and marketable securities balance and our expectation of future cash requirements.
ANALYSIS OF OUR CASH FLOWS
Cash Provided by Operating Activities
For the first six months of 2017, net cash provided by operating activities was $1.1 billion, compared to $899 million during the same period in 2016. The $185 million increase in our operating cash flows is primarily attributable to the larger build in air traffic liability in 2017 compared to the prior year and the addition of Virgin America. This was partially offset by a decrease in our net income, which was impacted by higher fuel costs and $64 million of merger-related costs.
We typically generate positive cash flows from operations and expect to use that cash flow to purchase aircraft and capital equipment, make scheduled debt payments and to return capital to shareholders.
Cash Used in Investing Activities
Cash used in investing activities was $971 million during the first six months of 2017, compared to $590 million during the same period of 2016. Our capital expenditures were $512 million in the first six months of 2017, an increase of $172 million compared to the six months ended June 30, 2016. There were more deposits made on future aircraft in the current year, when compared to the prior year. Our net purchases of marketable securities increased by $216 million from the prior year, primarily driven by stronger operating cash flows in the first six months of 2017.
The table below reflects our full-year expectation for capital expenditures and additional expenditures if options are exercised. Options will be exercised only if we believe return on invested capital targets can be met. The table below excludes any associated capitalized interest.
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(in millions) | 2017 |  | 2018 |  | 2019
Aircraft and aircraft purchase deposits—firm | $ | 805 |  |  | $ | 685 |  |  | $ | 595 |
Other flight equipment | 95 |  |  | 150 |  |  | 165 |
Other property and equipment | 215 |  |  | 235 |  |  | 215 |
Total property and equipment additions | $ | 1,115 |  |  | $ | 1,070 |  |  | $ | 975 |
Option aircraft and aircraft deposits, if exercised(a) | $ | 55 |  |  | $ | 230 |  |  | $ | 710 |

(a) | We have options to acquire 41 B737 aircraft with deliveries from 2019 through 2024, and options to acquire 30 E175 aircraft with deliveries in 2019 to 2021. Amounts above also include payments toward cancelable purchase commitments for 30 A320neo aircraft with deliveries from 2020 through 2022.

Cash Used by Financing Activities
Net cash used by financing activities was $243 million during the first six months of 2017 compared to $301 million during the same period in 2016. During the first six months of 2017 we made debt payments of $159 million and dividend payments totaling $74 million.
CONTRACTUAL OBLIGATIONS AND COMMITMENTS
Aircraft Commitments
As of June 30, 2017, we have firm orders to purchase or lease 83 aircraft. We also have cancelable purchase commitments for 30 Airbus A320neo with deliveries from 2020 through 2022. We could incur a loss of pre-delivery payments and credits as a cancellation fee. We also have options to acquire 41 B737 aircraft with deliveries from 2019 through 2024 and 30 E175 aircraft with deliveries from 2019 through 2021. In addition to the 20 E175 aircraft currently operated by SkyWest in our regional fleet and the five options exercised subsequent to June 30, 2017, we have options in future periods to add regional capacity by having SkyWest operate up to three more E175 aircraft.
The following table summarizes expected fleet activity by year as of June 30, 2017:

| Actual Fleet |  | Expected Fleet Activity(a)
Aircraft | June 30, 2017 |  | Remaining 2017 Additions |  | Remaining 2017 Removals |  | December 31, 2017 |  | 2018-2019 Changes |  | December 31, 2019
B737 Freighters & Combis(b) | 5 |  |  | 3 |  |  | (5 | ) |  | 3 |  |  | — |  |  | 3 |
B737 Passenger Aircraft(b) | 151 |  |  | 8 |  |  | (8 | ) |  | 151 |  |  | 15 |  |  | 166 |
Airbus Passenger Aircraft(b) | 65 |  |  | 3 |  |  | — |  |  | 68 |  |  | 4 |  |  | 72 |
Total Mainline Fleet | 221 |  |  | 14 |  |  | (13 | ) |  | 222 |  |  | 19 |  |  | 241 |
Q400 operated by Horizon | 52 |  |  | — |  |  | — |  |  | 52 |  |  | (15 | ) |  | 37 |
E175 operated by Horizon | 6 |  |  | 7 |  |  | — |  |  | 13 |  |  | 20 |  |  | 33 |
E175 operated by third party (c) | 20 |  |  | — |  |  | — |  |  | 20 |  |  | 5 |  |  | 25 |
Total Regional Fleet | 78 |  |  | 7 |  |  | — |  |  | 85 |  |  | 10 |  |  | 95 |
Total | 299 |  |  | 21 |  |  | (13 | ) |  | 307 |  |  | 29 |  |  | 336 |

(a) | The expected fleet counts at December 31, 2017 and beyond are subject to change.

(b) | Remaining 2017 changes in passenger aircraft reflect delivery of 8 Boeing 737-900ER aircraft and three A321neo aircraft, retirement of seven B737-400 passenger aircraft and the conversion of one B737-700 aircraft into a freighter. The freighter and combi changes reflect retirement of four combis and one freighter and the reintroduction of three B737-700 aircraft as freighters.

(c) | Subsequent to June 30, 2017, we exercised options for five E175s to be operated by Skywest under our capacity purchase agreement. The table above reflects these aircraft in the 2018-2019 changes.

For future firm orders, and if we exercise our options for additional deliveries, we may finance the aircraft through internally generated cash, long-term debt or lease arrangements.
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Fuel Hedge Positions
All of our current oil positions are call options, which are designed to effectively cap the cost of the crude oil component of our jet fuel purchases. With call options, we benefit from a decline in crude oil prices, as there is no cash outlay other than the premiums we pay to enter into the contracts. Our crude oil positions are as follows:

| Approximate % of Expected Fuel Requirements |  | Weighted-Average Crude Oil Price per Barrel |  | Average Premium Cost per Barrel
Third Quarter 2017 | 50 | % |  | $ | 62 |  |  | $ | 2 |
Fourth Quarter 2017 | 50 | % |  | 61 |  |  | 2 |
Remainder 2017 | 50 | % |  | $ | 62 |  |  | $ | 2 |
First Quarter 2018 | 40 | % |  | 61 |  |  | 2 |
Second Quarter 2018 | 30 | % |  | 61 |  |  | 2 |
Third Quarter 2018 | 20 | % |  | 58 |  |  | 2 |
Fourth Quarter 2018 | 10 | % |  | 57 |  |  | 3 |
Full Year 2018 | 24 | % |  | $ | 60 |  |  | $ | 2 |

Contractual Obligations
The following table provides a summary of our principal payments under current and long-term debt obligations, operating lease commitments, aircraft purchase commitments and other obligations as of June 30, 2017.

(in millions) | Remainder of 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Beyond 2021 |  | Total
Current and long-term debt obligations | $ | 161 |  |  | $ | 350 |  |  | $ | 422 |  |  | $ | 449 |  |  | $ | 422 |  |  | $ | 1,015 |  |  | $ | 2,819 |
Operating lease commitments(a) | 212 |  |  | 391 |  |  | 370 |  |  | 338 |  |  | 294 |  |  | 1,132 |  |  | 2,737 |
Aircraft maintenance deposits(b) | 29 |  |  | 61 |  |  | 65 |  |  | 68 |  |  | 63 |  |  | 90 |  |  | 376 |
Aircraft purchase commitments (c) | 463 |  |  | 836 |  |  | 758 |  |  | 338 |  |  | 260 |  |  | 362 |  |  | 3,017 |
Interest obligations(d) | 48 |  |  | 94 |  |  | 83 |  |  | 68 |  |  | 51 |  |  | 113 |  |  | 457 |
Aircraft maintenance and parts management(e) | 15 |  |  | 32 |  |  | 35 |  |  | 37 |  |  | 40 |  |  | — |  |  | 159 |
Other obligations(f) | 40 |  |  | 84 |  |  | 89 |  |  | 94 |  |  | 98 |  |  | 692 |  |  | 1,097 |
Total | $ | 968 |  |  | $ | 1,848 |  |  | $ | 1,822 |  |  | $ | 1,392 |  |  | $ | 1,228 |  |  | $ | 3,404 |  |  | $ | 10,662 |

(a) | Operating lease commitments generally include aircraft operating leases, airport property and hangar leases, office space, and other equipment leases. Included here are E175 aircraft that are operated by SkyWest under a capacity purchase agreement.

(b) | Aircraft maintenance deposits relate to leased Airbus aircraft.

(c) | Represents non-cancelable contractual commitments for aircraft and engines.

(d) | For variable-rate debt, future obligations are shown above using interest rates in effect as of June 30, 2017.

(e) | Includes minimum obligations under a parts management and maintenance agreement with a third-party vendor.

(f) | Includes minimum obligations associated with the SkyWest third-party CPA.

Credit Card Agreements
We have agreements with a number of credit card companies to process the sale of tickets and other services. Under these agreements, there are material adverse change clauses that, if triggered, could result in the credit card companies holding back a reserve from our credit card receivables. Under one such agreement, we could be required to maintain a reserve if our credit rating is downgraded below the contractually-specified level, or if our cash and marketable securities balance falls below $500 million. Under another such agreement, we could be required to maintain a reserve if our cash and marketable securities balance falls below $500 million. We are not currently required to maintain any reserve under these agreements, but if we were, our financial position and liquidity could be materially harmed.
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Deferred Income Taxes
For federal income tax purposes, the majority of our assets are fully depreciated over a seven-year life using an accelerated depreciation method or bonus depreciation, if available. For financial reporting purposes, the majority of our assets are depreciated over 15 to 25 years to an estimated salvage value using the straight-line basis. This difference has created a significant deferred tax liability. At some point in the future the depreciation basis will reverse, potentially resulting in an increase in income taxes paid.
While it is possible that we could have material cash obligations for this deferred liability at some point in the future, we cannot estimate the timing of long-term cash flows with reasonable accuracy. Taxable income and cash taxes payable in the short term are impacted by many items, including the amount of book income generated (which can be volatile depending on revenue and fuel prices), usage of net operating losses, whether "bonus depreciation" provisions are available, as well as other legislative changes that are beyond our control. We believe that we have the liquidity to make our future tax payments.
CRITICAL ACCOUNTING ESTIMATES
There have been no material changes to our critical accounting estimates for the three months ended June 30, 2017. For information on our critical accounting estimates, see Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K for the year ended December 31, 2016.
GLOSSARY OF AIRLINE TERMS
Aircraft Utilization - block hours per day; this represents the average number of hours per day our aircraft are in transit
Aircraft Stage Length - represents the average miles flown per aircraft departure
ASMs - available seat miles, or “capacity”; represents total seats available across the fleet multiplied by the number of miles flown
CASM - operating costs per ASM, or "unit cost"; represents all operating expenses including fuel and special items
CASMex - operating costs excluding fuel and special items per ASM; this metric is used to help track progress toward reduction of non-fuel operating costs since fuel is largely out of our control
Debt-to-capitalization ratio - represents adjusted debt (long-term debt plus the present value of future operating lease payments) divided by total equity plus adjusted debt
Diluted Earnings per Share - represents earnings per share ("EPS") using fully diluted shares outstanding
Diluted Shares - represents the total number of shares that would be outstanding if all possible sources of conversion, such as stock options, were exercised
Economic Fuel - best estimate of the cash cost of fuel, net of the impact of settled fuel-hedging contracts in the period
Free Cash Flow - total operating cash flow generated less cash paid for capital expenditures
Load Factor - RPMs as a percentage of ASMs; represents the number of available seats that were filled with paying passengers
Mainline - represents flying Boeing 737 and Airbus 320 family jets and all associated revenues and costs
PRASM - passenger revenue per ASM; commonly called “passenger unit revenue”
Productivity - number of revenue passengers per full-time equivalent employee
RASM - operating revenue per ASMs, or "unit revenue"; operating revenue includes all passenger revenue, freight & mail, Mileage Plan and other ancillary revenue; represents the average total revenue for flying one seat one mile
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Regional - represents capacity purchased by Alaska from Horizon, SkyWest and PenAir. In this segment, Regional records actual on-board passenger revenue, less costs such as fuel, distribution costs, and payments made to Horizon, SkyWest and PenAir under the respective capacity purchased arrangement (CPAs). Additionally, Regional includes an allocation of corporate overhead such as IT, finance, other administrative costs incurred by Alaska and on behalf of Horizon.
RPMs - revenue passenger miles, or "traffic"; represents the number of seats that were filled with paying passengers; one passenger traveling one mile is one RPM
Yield - passenger revenue per RPM; represents the average revenue for flying one passenger one mile

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

There have been no material changes in market risk from the information provided in Item 7A. “Quantitative and Qualitative Disclosure About Market Risk” in our Annual Report on Form 10-K for the year ended December 31, 2016.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures
As of June 30, 2017, an evaluation was performed under the supervision and with the participation of our management, including our chief executive officer and chief financial officer (collectively, our “certifying officers”), of the effectiveness of the design and operation of our disclosure controls and procedures. These disclosure controls and procedures are designed to ensure that the information required to be disclosed by us in our periodic reports filed with or submitted to the Securities and Exchange Commission (the SEC) is recorded, processed, summarized and reported within the time periods specified by the SEC's rules and forms, and includes, without limitation, controls and procedures designed to ensure that such information is accumulated and communicated to our management, including our certifying officers, as appropriate, to allow timely decisions regarding required disclosure. Our certifying officers concluded, based on their evaluation, that disclosure controls and procedures were effective as of June 30, 2017.
Changes in Internal Control over Financial Reporting
Except as noted below, there have been no changes in our internal control over financial reporting during the quarter ended June 30, 2017, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
In the fourth quarter of 2016, we acquired Virgin America (see Note 2). As permitted by Securities and Exchange Commission Staff interpretive guidance for newly acquired businesses, management excluded Virgin America from its annual evaluation of internal control over financial reporting as of December 31, 2016. We are implementing internal controls over significant processes specific to the acquisition that we believe are appropriate in consideration of related integration of operations, systems, control activities, and accounting for the merger and merger-related transactions. As of the date of this Quarterly Report on Form 10-Q, we are in the process of further integrating the acquired Virgin America operations into our overall internal controls over financial reporting.
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PART II

ITEM 1. LEGAL PROCEEDINGS

We are a party to routine litigation matters incidental to our business. Management believes the ultimate disposition of these matters is not likely to materially affect our financial position or results of operations. This forward-looking statement is based on management’s current understanding of the relevant law and facts, and it is subject to various contingencies, including the potential costs and risks associated with litigation and the actions of judges and juries.
In 2015, three flight attendants filed a class action lawsuit seeking to represent all Virgin America flight attendants for damages based on alleged violations of California and City of San Francisco wage and hour laws. Plaintiffs received class certification in November 2016. Virgin America filed a motion for summary judgment seeking to dismiss all claims on various federal preemption grounds. In January 2017, the Court denied in part and granted in part Virgin America’s motion. Virgin America believes the claims in this case are without factual and legal merit and intends to defend this lawsuit.

ITEM 1A. RISK FACTORS

There have been no material changes to the risk factors affecting our business, financial condition or future results from those set forth in Item 1A."Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2016.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

This table provides certain information with respect to our purchases of shares of our common stock during the second quarter of 2017.

| Total Number of Shares Purchased |  | Average Price Paid per Share |  | Maximum remaining dollar value of shares that can be purchased under the plan (in millions)
April 1, 2017 - April 30, 2017 | 129,040 |  |  | $ | 87.33 |  |  | — |
May 1, 2017 - May 31, 2017 | 127,640 |  |  | 84.55 |  |  |
June 1, 2017 - June 30, 2017 | — |  |  | — |  |  |
Total | 256,680 |  |  | $ | 85.94 |  |  | $ | 665 |

The shares were purchased pursuant to a $1 billion repurchase plan authorized by the Board of Directors in August 2015.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.

ITEM 5. OTHER INFORMATION

None.
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ITEM 6. EXHIBITS

The following documents are filed as part of this report:

1. | Exhibits: See Exhibit Index.

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

ALASKA AIR GROUP, INC. |
/s/ CHRISTOPHER M. BERRY |
Christopher M. Berry |
Vice President Finance and Controller |
August 3, 2017 |

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EXHIBIT INDEX

Exhibit Number | Exhibit Description | Form | Date of First Filing | Exhibit Number
3.1† | Amended and Restated Certificate of Incorporation of Registrant | 10-Q |  |
10.1* | Alaska Air Group Operational Performance Rewards Plan Description, adopted January 3, 2005; Amended February 14, 2017 | 10-Q | May 5, 2017 | 10.1
10.2* | Alaska Air Group Performance Based Pay Plan, Amended and Restated January 18, 2017 | 10-Q | May 5, 2017 | 10.2
31.1† | Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 | 10-Q |  |
31.2† | Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 | 10-Q |  |
32.1† | Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 | 10-Q |  |
32.2† | Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 | 10-Q |  |
101.INS† | XBRL Instance Document |  |  |
101.SCH† | XBRL Taxonomy Extension Schema Document |  |  |
101.CAL† | XBRL Taxonomy Extension Calculation Linkbase Document |  |  |
101.DEF† | XBRL Taxonomy Extension Definition Linkbase Document |  |  |
101.LAB† | XBRL Taxonomy Extension Label Linkbase Document |  |  |
101.PRE† | XBRL Taxonomy Extension Presentation Linkbase Document |  |  |
† | Filed herewith |  |  |
* | Indicates management contract or compensatory plan arrangement |  |  |

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