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Commitments and contingencies - Sale and lease back commitments (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 28, 2017
aircraft
Nov. 30, 2021
aircraft
Dec. 31, 2017
aircraft
Dec. 31, 2021
₡ / $
aircraft
Dec. 31, 2020
₡ / $
aircraft
Dec. 31, 2011
aircraft
Apr. 26, 2022
$ / $
Dec. 31, 2021
Q / $
Dec. 31, 2021
USD ($)
Dec. 31, 2021
$ / $
Dec. 31, 2021
MXN ($)
Dec. 31, 2020
Q / $
Dec. 31, 2020
USD ($)
Dec. 31, 2020
$ / $
Dec. 31, 2020
MXN ($)
Dec. 31, 2019
₡ / $
Dec. 31, 2019
Q / $
Dec. 31, 2019
USD ($)
Dec. 31, 2019
$ / $
Disclosure of maturity analysis of operating lease payments [line items]                                      
Estimated proceeds from aircraft sale                 $ 813,500,000   $ 16,744,677                
Non-cancellable sale and leaseback contracts of aircraft leases                 $ 950,923,000   19,573,324                
Exchange rate       645.9000 615.7800   20.3183 7.7285 20.5835 20.5835   7.8095 19.9487 19.9487   573.4400 7.6988 18.8452 18.8452
Possible contingencies | $                     163,000       $ 125,000        
Airbus purchase agreement                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Number Of Aircraft Purchased       15 7                            
A320NEO model                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Number Of Aircraft Purchased     46     30                          
A320NEO model | Airbus purchase agreement                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Number Of Aircraft Purchased 80 39                                  
Within one year                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Estimated proceeds from aircraft sale                 $ 705,500,000   14,521,659                
Non-cancellable sale and leaseback contracts of aircraft leases                 40,589,000   835,464                
Between one year and two years                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Estimated proceeds from aircraft sale                 108,000,000   2,223,018                
Non-cancellable sale and leaseback contracts of aircraft leases                 75,098,000   1,545,780                
Between two and three years                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Non-cancellable sale and leaseback contracts of aircraft leases                 79,244,000   1,631,119                
Between three and four years                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Non-cancellable sale and leaseback contracts of aircraft leases                 79,244,000   1,631,119                
Later Than Four Years                                      
Disclosure of maturity analysis of operating lease payments [line items]                                      
Non-cancellable sale and leaseback contracts of aircraft leases                 $ 676,748,000   $ 13,929,842