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Description of the business and summary of significant accounting policies - Aircraft, rotable spare parts, furniture and equipment, net (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Oct. 31, 2021
engine
Dec. 31, 2021
Dec. 31, 2021
engine
Dec. 31, 2021
MXN ($)
Dec. 31, 2021
aircraft
Dec. 31, 2021
agreement
Dec. 31, 2021
Dec. 31, 2020
MXN ($)
aircraft
Dec. 31, 2019
MXN ($)
agreement
aircraft
Aircraft, rotable spare parts, furniture and equipment, net                  
Maintenance deposits expensed as supplemental rent       $ 775,579       $ 421,030 $ 295,720
Number of aircraft added to fleet | aircraft         15     7 7
Number of aircraft with lease term extended 1   3     15     1
Number of engine agreements for which lease term extended | agreement           3      
Maintenance deposits expensed to contingent rent prior to lease extensions       0          
Length of time before routine aircraft and engine maintenance is required   24 months              
Maximum length of time before routine aircraft and engine maintenance   36 months              
Depreciation       1,022,012       $ 797,827 $ 587,849
Capitalized borrowing costs       143,966       $ 384,038 $ 456,313
Rate used to determine amount of borrowing cost             2.76% 3.58% 5.10%
Finance pre-delivery payments of aircraft                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       117,638       $ 73,952  
Constructions and improvements                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       16,261       16,379  
Computer equipment                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       5,630       7,613  
Annual depreciation rate             25.00%    
Workshop tools                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       3,612       2,374  
Annual depreciation rate             33.30%    
Electric power equipment                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       1,168       1,373  
Annual depreciation rate             10.00%    
Communications equipment                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       1,013       1,095  
Annual depreciation rate             10.00%    
Workshop machinery and equipment                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       1,928       1,549  
Annual depreciation rate             10.00%    
Motorized transport equipment platform.                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Annual depreciation rate             25.00%    
Service carts on board                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       762       558  
Annual depreciation rate             20.00%    
Office furniture and equipment                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Depreciation       5,571       5,768  
Annual depreciation rate             10.00%    
Leasehold improvements to flight equipment                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Additions       1,742,979       646,219  
Amortization of major maintenance leasehold improvement       838,433       652,091 $ 450,371
Depreciation       $ 865,993       $ 684,633  
Minimum                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Duration of routine aircraft and engine maintenance   7 days              
Length of time before major aircraft and engine maintenance is required   5 years              
Minimum | Finance pre-delivery payments of aircraft                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Annual depreciation rate             4.00%    
Maximum                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Duration of routine aircraft and engine maintenance   14 days              
Duration of major aircraft and engine maintenance   42 days              
Length of time before major aircraft and engine maintenance is required   6 years              
Maximum | Finance pre-delivery payments of aircraft                  
Aircraft, rotable spare parts, furniture and equipment, net                  
Annual depreciation rate             16.70%