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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, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule of operating costs and administrative expenses [Abstract]      
Aircraft fuel $ 1,045,343 $ 2,929,008 $ 2,983,028
Other rentals and landing fees [1] 720,005 1,275,859 1,206,881
Aircraft maintenance 472,382 444,611 366,627
Comisions 91,910 221,884 222,506
Passenger services 97,688 261,330 280,279
Other operating expenses 1,221,183 1,291,895 1,229,311
Total $ 3,648,511 $ 6,424,587 $ 6,288,632
[1] Lease expenses are included within this amount (See Note 2.21)