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Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2025
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of Components of Comprehensive Income | The differences between Net income and Comprehensive income for the three and nine months ended September 30, 2025 and 2024 were as follows:
| Three months ended September 30,
(in millions) | 2025 |  | 2024
NET INCOME | $ | 54 |  |  | $ | 67 |
Unrealized gain (loss) on fuel derivative instruments, net of deferred taxes of $8 and ($14) | 28 |  | (a) | (50) |
Other, net of deferred taxes of $1 and $— | 1 |  |  | 2 |
Total other comprehensive income (loss) | $ | 29 |  |  | $ | (48) |
COMPREHENSIVE INCOME | $ | 83 |  |  | $ | 19 |
(a) Includes reclassification adjustments from Accumulated Other Comprehensive Income into Fuel and oil expense associated with hedges previously terminated.
| Nine months ended September 30,
(in millions) | 2025 |  | 2024
NET INCOME | $ | 118 |  |  | $ | 204 |
Unrealized gain (loss) on fuel derivative instruments, net of deferred taxes of $5 and ($12) | 15 |  | (a) | (42) |
Other, net of deferred taxes of $1 and $1 | 4 |  |  | 5 |
Total other comprehensive income (loss) | $ | 19 |  |  | $ | (37) |
COMPREHENSIVE INCOME | $ | 137 |  |  | $ | 167 |
(a) Includes reclassification adjustments from Accumulated Other Comprehensive Income into Fuel and oil expense associated with hedges previously terminated.
Schedule of Rollforward of the Amounts Included in AOCI, Net of Taxes | A rollforward of the amounts included in AOCI, net of taxes, is shown below for the three and nine months ended September 30, 2025:
(in millions) | Fuel derivatives |  |  |  | Defined benefit plan items |  | Other |  | Deferred tax impact |  | Accumulated other comprehensive income (loss)
Balance at June 30, 2025 | $ | (209) |  |  |  |  | $ | 167 |  |  | $ | (4) |  |  | $ | 11 |  |  | $ | (35) |
Changes in fair value | — |  |  |  |  | — |  |  | — |  |  | — |  |  | — |
Reclassification to earnings | 36 |  |  |  |  | — |  |  | 2 |  |  | (9) |  |  | 29 |
Balance at September 30, 2025 | $ | (173) |  |  |  |  | $ | 167 |  |  | $ | (2) |  |  | $ | 2 |  |  | $ | (6) |
(in millions) | Fuel derivatives |  | Defined benefit plan items |  | Other |  |  |  | Deferred tax impact |  | Accumulated other comprehensive income (loss)
Balance at December 31, 2024 | $ | (193) |  |  | $ | 167 |  |  | $ | (7) |  |  |  |  | $ | 8 |  |  | $ | (25) |
Changes in fair value | (90) |  |  | — |  |  | — |  |  |  |  | 21 |  |  | (69) |
Reclassification to earnings | 110 |  |  | — |  |  | 5 |  |  |  |  | (27) |  |  | 88 |
Balance at September 30, 2025 | $ | (173) |  |  | $ | 167 |  |  | $ | (2) |  |  |  |  | $ | 2 |  |  | $ | (6) |
Schedule of Reclassification out of Accumulated Other Comprehensive Income | The following tables illustrate the significant amounts reclassified out of each component of AOCI for the three and nine months ended September 30, 2025:
Three months ended September 30, 2025
(in millions) |  | Amounts reclassified from AOCI |  | Affected line item in the unaudited Condensed Consolidated Statement of Comprehensive Income
AOCI components |  |
Unrealized loss on fuel derivative instruments |  | $ | 36 |  |  | Fuel and oil expense
|  | 8 |  |  | Less: Tax expense
|  | $ | 28 |  |  | Net of tax
Other |  | $ | 2 |  |  | Other operating expenses
|  | 1 |  |  | Less: Tax expense
|  | $ | 1 |  |  | Net of tax
Total reclassifications for the period |  | $ | 29 |  |  | Net of tax
Nine months ended September 30, 2025
(in millions) |  | Amounts reclassified from AOCI |  | Affected line item in the unaudited Condensed Consolidated Statement of Comprehensive Income
AOCI components |  |
Unrealized loss on fuel derivative instruments |  | $ | 110 |  |  | Fuel and oil expense
|  | 26 |  |  | Less: Tax expense
|  | $ | 84 |  |  | Net of tax
Other |  | $ | 5 |  |  | Other operating expenses
|  | 1 |  |  | Less: Tax expense
|  | $ | 4 |  |  | Net of tax
Total reclassifications for the period |  | $ | 88 |  |  | Net of tax

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