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Guarantee deposits (Details)
$ in Thousands, $ in Thousands
Dec. 31, 2017
USD ($)
Dec. 31, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Current assets:      
Aircraft maintenance deposits paid to lessors   $ 1,317,663 $ 1,145,913
Deposits for rental of flight equipment   17,178 14,155
Other guarantee deposits   18,052 7,141
Total $ 68,552 1,352,893 1,167,209
Non-current assets:      
Aircraft maintenance deposits paid to lessors   5,631,304 5,951,831
Deposits for rental of flight equipment   441,110 589,804
Other guarantee deposits   25,838 18,243
Total $ 309,001 6,098,252 6,559,878
Total guarantee deposits   $ 7,451,145 $ 7,727,087