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Income tax - Tax loss carry-forward (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Available tax loss carry-forward      
Historical Loss $ 1,652,668    
Restated tax loss 1,739,403    
Utilized 179,574    
Total remaining amount 1,559,829    
Unrecognized NOLs (528,758)    
Net remaining amount $ 1,031,071    
Statutory income tax rate 30.00% 30.00% 30.00%
Deferred income tax $ 2,029,811 $ 1,304,033 $ 978,683
Tax balances      
Restated contributed capital account (CUCA) 3,917,548    
CUFIN 3,107,037    
Tax losses available for offsetting against future taxable income      
Available tax loss carry-forward      
Deferred income tax 309,320 $ 343,082 $ 33,324
Comercializadora Volaris, S.A. de C.V.      
Available tax loss carry-forward      
Historical Loss 52,221    
Restated tax loss 57,215    
Utilized 57,215    
Concesionaria      
Available tax loss carry-forward      
Historical Loss 1,067,836    
Restated tax loss 1,149,425    
Utilized 122,359    
Total remaining amount 1,027,066    
Operaciones Volaris      
Available tax loss carry-forward      
Historical Loss 3,853    
Restated tax loss 4,005    
Total remaining amount 4,005    
Vuela, S.A.      
Available tax loss carry-forward      
Historical Loss 528,758    
Restated tax loss 528,758    
Total remaining amount 528,758    
2016, Expiration 2019      
Available tax loss carry-forward      
Historical Loss 57,414    
Restated tax loss 57,414    
Total remaining amount 57,414    
2016, Expiration 2026      
Available tax loss carry-forward      
Historical Loss 52,221    
Restated tax loss 57,215    
Utilized 57,215    
2017, Expiration 2020      
Available tax loss carry-forward      
Historical Loss 300,613    
Restated tax loss 300,613    
Total remaining amount 300,613    
2017, Expiration 2027      
Available tax loss carry-forward      
Historical Loss 1,068,498    
Restated tax loss 1,150,140    
Utilized 122,359    
Total remaining amount 1,027,781    
2018, Expiration 2021      
Available tax loss carry-forward      
Historical Loss 170,731    
Restated tax loss 170,731    
Total remaining amount 170,731    
2018, Expiration 2028      
Available tax loss carry-forward      
Historical Loss 3,191    
Restated tax loss 3,290    
Total remaining amount $ 3,290