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PROPERTY, PLANT AND EQUIPMENT - Schedule of movement of property, plant and equipment (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) aircraft | Dec. 31, 2023 USD ($) aircraft | Dec. 31, 2022 USD ($) aircraft | Dec. 31, 2020 aircraft
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | $ 6,891,925 | $ 7,021,134 | $ 7,335,118 |
Additions | 1,254,173 | 938,381 | 894,097 |
Disposals | (2,950) | (2,718) | (4,407) |
Rejection fleet |  | 0 | 0 |
Retirements | (56,328) | (87,749) | (43,305) |
Depreciation expenses | (799,552) | (745,654) | (699,046) |
Foreign exchange | (164,663) | 40,842 | 22,082 |
Other increases (decreases) | 348,538 | (272,311) | (483,405) |
Changes, total | 579,218 | (129,209) | (313,984) |
Closing balance | $ 7,471,143 | $ 6,891,925 | $ 7,021,134 |
Number of aircraft transferred to held for sale | aircraft | 0 |  |  |
Airbus A319 |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Number of aircraft transferred to held for sale | aircraft | 26 |  |  |
Non-current assets or disposal groups classified as held for sale |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Number of aircraft transferred to held for sale | aircraft | 9 |  |  |
Non-current assets or disposal groups classified as held for sale | Boeing 767 |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Number of aircraft transferred to held for sale | aircraft |  | 1 |  | 11
Reclassified to non-current assets |  | $ (21,578) |  |
Non-current assets or disposal groups classified as held for sale | Airbus A320 |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Number of aircraft transferred to held for sale | aircraft | 3 | 6 | 6 |
Reclassified to non-current assets |  | $ (36,326) | $ (29,328) |
Non-current assets or disposal groups classified as held for sale | Airbus A319 |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Number of aircraft transferred to held for sale | aircraft |  |  | 28 |
Reclassified to non-current assets |  |  | $ (373,410) |
Construction in progress |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | $ 258,246 | 388,810 | 473,797 |
Additions | 20,754 | 8,835 | 16,332 |
Disposals | 0 | 0 | 0 |
Rejection fleet |  | 0 | 0 |
Retirements | 0 | (83) | (75) |
Depreciation expenses | 0 | 0 | 0 |
Foreign exchange | (1,354) | 726 | (1,282) |
Other increases (decreases) | 202,225 | (140,042) | (99,962) |
Changes, total | 221,625 | (130,564) | (84,987) |
Closing balance | 479,871 | 258,246 | 388,810 |
Land |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 44,244 | 44,349 | 43,276 |
Additions | 0 | 0 | 0 |
Disposals | 0 | 0 | 0 |
Rejection fleet |  | 0 | 0 |
Retirements | 0 | 0 | 0 |
Depreciation expenses | 0 | 0 | 0 |
Foreign exchange | (4,426) | 1,445 | 1,073 |
Other increases (decreases) | 0 | (1,550) | 0 |
Changes, total | (4,426) | (105) | 1,073 |
Closing balance | 39,818 | 44,244 | 44,349 |
Buildings net |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 67,558 | 68,996 | 60,451 |
Additions | 0 | 0 | 0 |
Disposals | 0 | 0 | 0 |
Rejection fleet |  | 0 | 0 |
Retirements | 0 | 0 | (2) |
Depreciation expenses | (3,992) | (4,104) | (3,285) |
Foreign exchange | (3,143) | 1,505 | 918 |
Other increases (decreases) | 0 | 1,161 | 10,914 |
Changes, total | (7,135) | (1,438) | 8,545 |
Closing balance | 60,423 | 67,558 | 68,996 |
Plant and equipment net |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 6,236,344 | 6,304,848 | 6,568,717 |
Additions | 1,215,040 | 870,640 | 843,808 |
Disposals | (2,940) | (2,701) | (4,140) |
Rejection fleet |  | 0 | 0 |
Retirements | (56,148) | (87,652) | (42,055) |
Depreciation expenses | (771,104) | (716,590) | (669,059) |
Foreign exchange | (108,966) | 23,845 | 11,527 |
Other increases (decreases) | 136,506 | (156,046) | (403,950) |
Changes, total | 412,388 | (68,504) | (263,869) |
Closing balance | 6,648,732 | 6,236,344 | 6,304,848 |
Information technology equipment net |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 17,342 | 16,609 | 16,836 |
Additions | 9,669 | 5,794 | 6,426 |
Disposals | (8) | (1) | 0 |
Rejection fleet |  | 0 | 0 |
Retirements | (91) | (12) | (24) |
Depreciation expenses | (5,724) | (5,918) | (5,662) |
Foreign exchange | (1,780) | 536 | (84) |
Other increases (decreases) | (115) | 334 | (883) |
Changes, total | 1,951 | 733 | (227) |
Closing balance | 19,293 | 17,342 | 16,609 |
Fixed installations & accessories net |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 54,410 | 37,072 | 38,741 |
Additions | 421 | 4,246 | 113 |
Disposals | 0 | 0 | (264) |
Rejection fleet |  | 0 | 0 |
Retirements | (89) | (2) | (836) |
Depreciation expenses | (8,877) | (8,789) | (7,914) |
Foreign exchange | (5,401) | 1,276 | 2,365 |
Other increases (decreases) | 7,509 | 20,607 | 4,867 |
Changes, total | (6,437) | 17,338 | (1,669) |
Closing balance | 47,973 | 54,410 | 37,072 |
Motor vehicles net |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 351 | 423 | 325 |
Additions | 0 | 0 | 258 |
Disposals | (2) | (16) | (3) |
Rejection fleet |  | 0 | 0 |
Retirements | 0 | 0 | 0 |
Depreciation expenses | (65) | (68) | (55) |
Foreign exchange | 0 | 12 | (28) |
Other increases (decreases) | 0 | 0 | (74) |
Changes, total | (67) | (72) | 98 |
Closing balance | 284 | 351 | 423 |
Leasehold improvements |  |  |  |
Property, Plant and Equipment [Roll Forward] |  |  |  |
Opening balance | 213,430 | 160,027 | 132,975 |
Additions | 8,289 | 48,866 | 27,160 |
Disposals | 0 | 0 | 0 |
Rejection fleet |  | 0 | 0 |
Retirements | 0 | 0 | (313) |
Depreciation expenses | (9,790) | (10,185) | (13,071) |
Foreign exchange | (39,593) | 11,497 | 7,593 |
Other increases (decreases) | 2,413 | 3,225 | 5,683 |
Changes, total | (38,681) | 53,403 | 27,052 |
Closing balance | $ 174,749 | $ 213,430 | $ 160,027 |

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