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COSTS AND EXPENSES BY NATURE (Details) - Schedule of operating costs and administrative expenses - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Schedule of operating costs and administrative expenses [Abstract]      
Aircraft fuel $ 2,929,008 $ 2,983,028 $ 2,318,816
Other rentals and landing fees [1] 1,275,859 1,206,881 1,233,640
Aircraft maintenance 444,611 366,627 422,943
Comissions 221,884 222,506 252,474
Passenger services 261,330 280,279 288,662
Other operating expenses 1,291,895 1,229,311 1,374,368
Total $ 6,424,587 $ 6,288,632 $ 5,890,903
[1] Lease expenses are included within this amount (See Note 2.21)