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CURRENT AND DEFERRED TAXES (Details) - Schedule of income before tax from the chilean legal tax rate - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Schedule of income before tax from the chilean legal tax rate [Abstract]      
Tax expense using the legal rate $ 1,102,736 $ 1,378,547 $ (38,318)
Tax expense using the legal rate, percentage (27.00%) (27.00%) (27.00%)
Tax effect of rates in other jurisdictions $ 54,775 $ 58,268 $ (20,082)
Tax effect of rates in other jurisdictions, percentage (1.34%) (1.14%) (14.15%)
Tax effect of non-taxable operating revenues $ 9,444 $ 19,529 $ 13,125
Tax effect of non-taxable operating revenues, percentage (0.23%) (0.38%) 9.25%
Tax effect of disallowable expenses $ (30,928) $ (40,528) $ (66,257)
Tax effect of disallowable expenses, percentage 0.76% 0.79% (46.69%)
Other increases (decreases):      
Derecognition of deferred tax liabilities for early termination of aircraft financing $ 205,458 $ 294,969 $ 145,930
Derecognition of deferred tax liabilities for early termination of aircraft financing, percentage (5.03%) (5.78%) 102.83%
Tax effect for goodwill impairment losses $ (453,681)
Tax effect for goodwill impairment losses, percentage 8.89%
Derecognition of deferred tax assets not recoverable $ (1,251,912) $ (237,637)
Derecognition of deferred tax assets not recoverable, percentage 30.65% 4.65%
Deferred tax asset not recognized $ (667,702) $ (414,741)
Deferred tax asset not recognized, percentage 16.35% 8.12%
Other increases (decreases) $ 9,194 $ (54,538) $ 19,299
Other increases (decreases), percentage (0.23%) 1.07% 13.60%
Total adjustments to tax expense using the legal rate $ (1,671,671) $ (828,359) $ 92,015
Total adjustments to tax expense using the legal rate, percentage 40.93% 16.22% 64.84%
Tax expense using the effective rate $ (568,935) $ 550,188 $ 53,697
Tax expense using the effective rate, percentage 13.93% (10.78%) 37.84%