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OPERATING SEGMENT INFORMATION - Reportable Segments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | $ 11,735 | $ 10,426 | $ 9,646
Wages and benefits | 3,588 | 3,041 | 2,640
Variable incentive pay | 358 | 200 | 257
Aircraft maintenance | 620 | 488 | 424
Aircraft rent | 207 | 208 | 291
Landing fees and other rentals | 781 | 680 | 581
Contracted services | 444 | 389 | 329
Selling expenses | 349 | 303 | 295
Depreciation and amortization | 583 | 451 | 415
Food and beverage service | 287 | 241 | 197
Other | 854 | 729 | 717
Regional carrier expenses | 243 | 218 | 182
Total Operating Expenses | 11,165 | 10,032 | 9,576
Interest income | 101 | 80 | 53
Interest expense | (171) | (121) | (108)
Other - net | 0 | (39) | 50
Total Non-operating Income (Expense) | (25) | (71) | 9
Income Before Income Tax | 545 | 323 | 79
Reconciliation to Consolidated Income Before Income Tax |  |  |
Special items - operating | 345 | 443 | 580
Special items - net non-operating | 16 | (18) | 0
Capital expenditures | 1,349 | 1,673 | 1,671
Total assets | 19,768 | 14,613 |
Goodwill | 2,724 | 1,943 |
Passenger Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 10,654 | 9,526 | 8,808
Mileage Plan Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 1,913 | 1,682 | 1,521
Cargo and other revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 348 | 252 | 248
Passenger | Passenger Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 10,654 | 9,526 | 8,808
Passenger | Mileage Plan Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 1,180 | 1,034 | 931
Mileage Plan Services, Other | Mileage Plan Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 733 | 648 | 590
Cargo and Freight | Cargo and other revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 348 | 252 | 248
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 11,725 | 10,418 | 9,642
Wages and benefits | 3,080 | 2,562 | 2,213
Variable incentive pay | 322 | 175 | 229
Economic fuel | 2,534 | 2,643 | 2,592
Aircraft maintenance | 557 | 440 | 365
Aircraft rent | 99 | 100 | 187
Landing fees and other rentals | 657 | 559 | 461
Contracted services | 550 | 492 | 382
Selling expenses | 311 | 268 | 263
Depreciation and amortization | 526 | 402 | 350
Food and beverage service | 259 | 218 | 177
Other | 746 | 625 | 589
Regional carrier expenses | 1,276 | 1,121 | 1,085
Total Operating Expenses | 10,917 | 9,605 | 8,893
Interest income | 120 | 95 | 59
Interest expense | (149) | (96) | (94)
Other - net | 18 | (14) | 65
Total Non-operating Income (Expense) | (11) | (15) | 30
Income Before Income Tax | 797 | 798 | 779
Operating Segments | Alaska Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 9,051 | 8,853 | 8,081
Wages and benefits | 2,781 | 2,562 | 2,213
Variable incentive pay | 318 | 175 | 229
Economic fuel | 1,962 | 2,264 | 2,195
Aircraft maintenance | 475 | 440 | 365
Aircraft rent | 81 | 100 | 187
Landing fees and other rentals | 596 | 559 | 461
Contracted services | 511 | 492 | 382
Selling expenses | 271 | 268 | 263
Depreciation and amortization | 462 | 402 | 350
Food and beverage service | 231 | 218 | 177
Other | 680 | 625 | 589
Regional carrier expenses | 0 | 0 | 0
Total Operating Expenses | 8,368 | 8,105 | 7,411
Interest income | 113 | 95 | 59
Interest expense | (112) | (96) | (94)
Other - net | 19 | (14) | 65
Total Non-operating Income (Expense) | 20 | (15) | 30
Income Before Income Tax | 703 | 733 | 700
Reconciliation to Consolidated Income Before Income Tax |  |  |
Capital expenditures | 1,226 | 1,473 | 1,544
Total assets | 24,664 | 19,937 |
Goodwill | 2,177 | 1,943 |
Operating Segments | Hawaiian Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 869 | 0 | 0
Wages and benefits | 299 | 0 | 0
Variable incentive pay | 4 | 0 | 0
Economic fuel | 195 | 0 | 0
Aircraft maintenance | 82 | 0 | 0
Aircraft rent | 18 | 0 | 0
Landing fees and other rentals | 61 | 0 | 0
Contracted services | 39 | 0 | 0
Selling expenses | 40 | 0 | 0
Depreciation and amortization | 64 | 0 | 0
Food and beverage service | 28 | 0 | 0
Other | 66 | 0 | 0
Regional carrier expenses | 0 | 0 | 0
Total Operating Expenses | 896 | 0 | 0
Interest income | 7 | 0 | 0
Interest expense | (37) | 0 | 0
Other - net | (1) | 0 | 0
Total Non-operating Income (Expense) | (31) | 0 | 0
Income Before Income Tax | (58) | 0 | 0
Reconciliation to Consolidated Income Before Income Tax |  |  |
Capital expenditures | 33 | 0 | 0
Total assets | 4,423 | 0 |
Goodwill | 547 | 0 |
Operating Segments | Regional |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 1,805 | 1,565 | 1,561
Wages and benefits | 0 | 0 | 0
Variable incentive pay | 0 | 0 | 0
Economic fuel | 377 | 379 | 397
Aircraft maintenance | 0 | 0 | 0
Aircraft rent | 0 | 0 | 0
Landing fees and other rentals | 0 | 0 | 0
Contracted services | 0 | 0 | 0
Selling expenses | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0
Food and beverage service | 0 | 0 | 0
Other | 0 | 0 | 0
Regional carrier expenses | 1,276 | 1,121 | 1,085
Total Operating Expenses | 1,653 | 1,500 | 1,482
Interest income | 0 | 0 | 0
Interest expense | 0 | 0 | 0
Other - net | 0 | 0 | 0
Total Non-operating Income (Expense) | 0 | 0 | 0
Income Before Income Tax | 152 | 65 | 79
Operating Segments | Passenger | Passenger Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 10,654 | 9,526 | 8,808
Operating Segments | Passenger | Passenger Revenue | Alaska Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 8,151 | 8,010 | 7,299
Operating Segments | Passenger | Passenger Revenue | Hawaiian Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 757 | 0 | 0
Operating Segments | Passenger | Passenger Revenue | Regional |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 1,746 | 1,516 | 1,509
Operating Segments | Mileage Plan Services, Other | Mileage Plan Revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 733 | 648 | 590
Operating Segments | Mileage Plan Services, Other | Mileage Plan Revenue | Alaska Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 621 | 599 | 538
Operating Segments | Mileage Plan Services, Other | Mileage Plan Revenue | Hawaiian Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 53 | 0 | 0
Operating Segments | Mileage Plan Services, Other | Mileage Plan Revenue | Regional |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 59 | 49 | 52
Operating Segments | Cargo and Freight | Cargo and other revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 338 | 244 | 244
Operating Segments | Cargo and Freight | Cargo and other revenue | Alaska Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 279 | 244 | 244
Operating Segments | Cargo and Freight | Cargo and other revenue | Hawaiian Airlines |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 59 | 0 | 0
Operating Segments | Cargo and Freight | Cargo and other revenue | Regional |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 0 | 0 | 0
Corporate And Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating revenue | 10 | 8 | 4
Income Before Income Tax | 39 | (16) | (44)
Reconciliation to Consolidated Income Before Income Tax |  |  |
Total assets | (9,319) | (5,324) |
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment |  |  |
Reconciliation to Consolidated Income Before Income Tax |  |  |
Aircraft fuel mark-to-market adjustment | 28 | 2 | (76)
Unrealized gain on foreign debt | 10 |  |
Special items - operating | (345) | (443) | (580)
Special items - net non-operating | 16 | (18) |
Segment Reporting, Reconciling Item, Corporate Nonsegment |  |  |
Reconciliation to Consolidated Income Before Income Tax |  |  |
Capital expenditures | 90 | 200 | $ 127
Segment Reporting, Reconciling Item, Corporate Nonsegment | Embraer E175 aircraft |  |  |
Reconciliation to Consolidated Income Before Income Tax |  |  |
Capital expenditures | $ 68 | $ 179 |

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