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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Cash flows from operating activities: |  |
Net income | $ 5 | $ 58
Deferred income taxes | 3 | 13
Depreciation and amortization | 34 | 23
Gains recognized on sale-leaseback transactions | (148) | (57)
Stock-based compensation | 9 | 7
Amortization of cash flow hedges, net of tax | 0 | 1
Changes in operating assets and liabilities: |  |
Accounts receivable, net | (1) | 28
Supplies and other current assets | 1 | 9
Aircraft maintenance deposits | 82 | (9)
Other long-term assets | (105) | (93)
Accounts payable | 9 | 6
Air traffic liability | 70 | 40
Other liabilities | 28 | (60)
Cash used in operating activities | (13) | (34)
Cash flows from investing activities: |  |
Capital expenditures | (48) | (23)
Pre-delivery deposits for flight equipment, net of refunds | 15 | (9)
Other | (1) | (1)
Cash used in investing activities | (34) | (33)
Cash flows from financing activities: |  |
Proceeds from issuance of debt, net of issuance costs | 142 | 52
Principal repayments on debt | (161) | (51)
Proceeds from sale-leaseback transactions | 116 | 89
Proceeds from the exercise of stock options | 1 | 1
Tax withholdings on share-based awards | (2) | (5)
Cash provided by financing activities | 96 | 86
Net increase in cash, cash equivalents and restricted cash | 49 | 19
Cash, cash equivalents and restricted cash, beginning of period | 609 | 761
Cash, cash equivalents and restricted cash, end of period | $ 658 | $ 780

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