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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2025
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | Disaggregated operating revenues are as follows (in millions):
| Year Ended December 31,
| 2025 |  | 2024 |  | 2023
Passenger revenues: |  |  |  |  |
Fare | $ | 1,481 |  |  | $ | 1,435 |  |  | $ | 1,277 |
Non-fare passenger revenues: |  |  |  |  |
Service fees | 947 |  |  | 1,005 |  |  | 943 |
Baggage | 746 |  |  | 862 |  |  | 880 |
Seat selection | 297 |  |  | 264 |  |  | 281 |
Other | 127 |  |  | 117 |  |  | 128 |
Total non-fare passenger revenue | 2,117 |  |  | 2,248 |  |  | 2,232 |
Total passenger revenues | 3,598 |  |  | 3,683 |  |  | 3,509 |
Other revenues | 126 |  |  | 92 |  |  | 80 |
Total operating revenues | $ | 3,724 |  |  | $ | 3,775 |  |  | $ | 3,589 |
Schedule of Revenue by Geographic Region | Operating revenues by principal geographic region, as defined by the U.S. Department of Transportation (the “DOT”), are as follows (in millions):
| Year Ended December 31,
| 2025 |  | 2024 |  | 2023
Domestic | $ | 3,547 |  |  | $ | 3,565 |  |  | $ | 3,315 |
Latin America | 177 |  |  | 210 |  |  | 274 |
Total operating revenues | $ | 3,724 |  |  | $ | 3,775 |  |  | $ | 3,589 |

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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 + Details
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