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INTANGIBLE ASSETS OTHER THAN GOODWILL - Schedule of movement in intangible assets other than goodwill (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Intangible Assets Other Than Goodwill Gross Amount [Roll Forward]      
Opening balance $ 1,080,386 $ 1,018,892 $ 1,046,559
Additions 79,144 66,867 82,798
Withdrawals   (3,192) (704)
Transfer software and others (718) (2,446) 135
Foreign exchange 52,478 54,623 (58,734)
Amortization (59,304) (54,358) (51,162)
Closing balance 1,151,986 1,080,386 1,018,892
Computer software and others Net      
Intangible Assets Other Than Goodwill Gross Amount [Roll Forward]      
Opening balance 143,575 136,262 139,341
Additions 298 47 0
Withdrawals   (2,947) (275)
Transfer software and others 69,210 61,212 46,144
Foreign exchange 2,612 3,359 (3,571)
Amortization (59,304) (54,358) (45,377)
Closing balance 156,391 143,575 136,262
Developing software      
Intangible Assets Other Than Goodwill Gross Amount [Roll Forward]      
Opening balance 107,652 104,874 68,521
Additions 78,846 66,820 82,798
Withdrawals   (245) (429)
Transfer software and others (69,928) (63,658) (45,657)
Foreign exchange 440 (139) (359)
Amortization 0 0 0
Closing balance 117,010 107,652 104,874
Airport slots      
Intangible Assets Other Than Goodwill Gross Amount [Roll Forward]      
Opening balance 625,368 587,214 627,742
Additions 0 0 0
Withdrawals   0 0
Transfer software and others 0 0 0
Foreign exchange 33,581 38,154 (40,528)
Amortization 0 0 0
Closing balance 658,949 625,368 587,214
Loyalty program      
Intangible Assets Other Than Goodwill Gross Amount [Roll Forward]      
Opening balance 203,791 190,542 210,955
Additions 0 0 0
Withdrawals   0 0
Transfer software and others 0 0 (352)
Foreign exchange 15,845 13,249 (14,276)
Amortization 0 0 (5,785)
Closing balance $ 219,636 $ 203,791 $ 190,542