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Related parties - Transactions with related parties (Details) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of transactions between related parties      
Guarantees provided $ 0 $ 0  
guarantees received 0 0  
Provision for expected credit losses 0 0  
Frontier Airlines Inc      
Disclosure of transactions between related parties      
Code-share 148,964 208,968 $ 8,358
Aeromantenimiento, S.A.      
Disclosure of transactions between related parties      
Aircraft and engine maintenance 239,118 201,624 341,726
Technical support 3,945 5,815 4,796
One Link, S.A. de C.V.      
Disclosure of transactions between related parties      
Call center fees and other professional fees 73,167 37,026  
Mijares, Angoitia, Corts y Fuentes, S.C.      
Disclosure of transactions between related parties      
Professional fees 5,582 1,321 1,672
Grupo Aeroportuario del Centro Norte      
Disclosure of transactions between related parties      
Airport service 32,193    
Chevez, Ruiz, Zamarripa y Ca., S.C      
Disclosure of transactions between related parties      
Professional fees 4,823    
Servprot S.A. de C.V.      
Disclosure of transactions between related parties      
Security service $ 3,464 $ 3,120 2,804
Human Capital International      
Disclosure of transactions between related parties      
Professional fees     $ 324