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Income tax - Tax loss carry-forward (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Available tax loss carry-forward      
Historical Loss $ 2,084,960    
Restated tax loss 2,238,306    
Utilized 296,242    
Total remaining amount 1,942,064    
Unrecognized NOLs 20,657    
Net remaining amount $ 1,921,407    
Statutory income tax rate 30.00% 30.00% 30.00%
Deferred income tax $ 15,768,220 $ 14,511,827  
Tax balances      
Adjusted contributed capital account (CUCA) 4,607,752    
CUFIN 3,241,275    
Tax losses available for offsetting against future taxable income      
Available tax loss carry-forward      
Deferred income tax 576,422 $ 303,970 $ 309,320
Comercializadora Volaris, S.A. de C.V.      
Available tax loss carry-forward      
Historical Loss 42,777    
Restated tax loss 43,685    
Total remaining amount 43,685    
Concesionaria      
Available tax loss carry-forward      
Historical Loss 1,875,180    
Restated tax loss 2,027,302    
Utilized 217,393    
Total remaining amount 1,809,909    
Operaciones Volaris      
Available tax loss carry-forward      
Historical Loss 18,648    
Restated tax loss 18,965    
Total remaining amount 18,965    
Vuela, S.A.      
Available tax loss carry-forward      
Historical Loss 148,355    
Restated tax loss 148,354    
Utilized 78,849    
Total remaining amount 69,505    
2017, Expiration 2027      
Available tax loss carry-forward      
Historical Loss 1,067,836    
Restated tax loss 1,206,232    
Utilized 217,393    
Total remaining amount 988,839    
2018, Expiration 2021      
Available tax loss carry-forward      
Historical Loss 92,604    
Restated tax loss 92,604    
Utilized 78,849    
Total remaining amount 13,755    
2019, Expiration 2029      
Available tax loss carry-forward      
Historical Loss 4,922    
Restated tax loss 5,186    
Total remaining amount 5,186    
2020, Expiration 2030      
Available tax loss carry-forward      
Historical Loss 863,847    
Restated tax loss 878,533    
Total remaining amount 878,533    
2020, Expiration 2023      
Available tax loss carry-forward      
Historical Loss 55,751    
Restated tax loss 55,751    
Total remaining amount $ 55,751