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Subsequent events (Details) - Exclude
 1 Months Ended 4 Months Ended
Feb. 21, 2020
May 31, 2020
Apr. 30, 2020
Apr. 27, 2020
$ / $
Dec. 31, 2019
$ / $
Dec. 31, 2019
Q / $
Dec. 31, 2019
₡ / $
Dec. 31, 2019
USD ($)
Dec. 31, 2018
$ / $
Dec. 31, 2018
Q / $
Dec. 31, 2018
₡ / $
Dec. 31, 2017
$ / $
Dec. 31, 2017
Q / $
Dec. 31, 2017
₡ / $
Disclosure of non-adjusting events after reporting period [line items]                            
Closing foreign exchange rate       24.6230 18.8452 7.6988 573.4400 18.8452 19.6829 7.7440 609.6100 19.7354 7.3448 572.5600
Renewal term of Concession to provide air transportation services                            
Disclosure of non-adjusting events after reporting period [line items]                            
Renewal term to provide air transportation services 20 years                          
Change in exchange rate                            
Disclosure of non-adjusting events after reporting period [line items]                            
Closing foreign exchange rate       24.6230 18.8452                  
Depreciation of Mexican Peso       30.70%                    
Outbreak of COVID-19                            
Disclosure of non-adjusting events after reporting period [line items]                            
Percentage of decrease in capacity   90.00% 80.00%