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Related parties - Transactions with related parties (Details) - MXN ($)
$ in Thousands
12 Months Ended 36 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2018
Disclosure of transactions between related parties        
Guarantees provided $ 0      
guarantees received 0      
Provision for expected credit losses       $ 0
Frontier        
Disclosure of transactions between related parties        
Code-share 8,358      
Aeromantenimiento, S.A.        
Disclosure of transactions between related parties        
Aircraft and engine maintenance 341,726 $ 249,266 $ 304,399  
Technical support 4,796 8,088 8,105  
One Link, S.A. de C.V.        
Disclosure of transactions between related parties        
Call center fees and other fees $ 4,800 $ 202,689 $ 173,197