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Income tax - Analysis of deferred taxes (Details)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2021
MXN ($)
Dec. 31, 2020
MXN ($)
Dec. 31, 2019
MXN ($)
Dec. 31, 2021
MXN ($)
Analysis of consolidated deferred taxes          
Net operating loss $ (391,882) $ (8,066,296) $ 3,253,596 $ (4,355,423)  
Deferred tax assets     15,859,473   $ 15,886,877
Deferred tax liabilities     12,930,689   13,209,340
Deferred tax liability, net     2,928,784 1,386,397 2,677,537
Reflected in consolidated statement of financial position          
Deferred tax assets 141,272   3,128,555   2,907,879
Deferred tax liabilities $ (11,191)   (199,771)   (230,342)
Deferred tax liability, net     2,928,784 1,386,397 2,677,537
Reconciliation of deferred tax liability, net          
Deferred tax (liability) asset, net - beginning of the year   2,928,784 1,386,397    
Deferred income tax (expense) benefit during the current year recorded on profits   (248,442) 1,494,758    
Deferred income tax (expense) benefit during the current year recorded in accumulated other comprehensive income (loss)   (2,805) 47,629 (71,762)  
Deferred tax (liability) asset, net - end of the year   2,677,537 2,928,784 1,386,397  
Tax effect of the discontinuation of the hedging reserve         473,000
Temporary differences associated with investments in subsidiaries     150,683   157,422
Deferred tax assets.          
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   30,209 1,651,362    
Lease liabilities          
Analysis of consolidated deferred taxes          
Deferred tax assets     13,239,254   13,969,589
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   730,335 1,084,140    
Unearned transportation revenue          
Analysis of consolidated deferred taxes          
Deferred tax assets     1,233,661   201,436
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (1,032,225) 436,598    
Extension lease agreement          
Analysis of consolidated deferred taxes          
Deferred tax assets     773,443   1,073,547
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   300,104 314,100    
Intangible          
Analysis of consolidated deferred taxes          
Deferred tax assets     420,908   395,752
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (25,156) (25,941)    
Allowance for doubtful accounts          
Analysis of consolidated deferred taxes          
Deferred tax assets     61,565   131,486
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   69,921 47,476    
Tax losses available for offsetting against future taxable income          
Analysis of consolidated deferred taxes          
Deferred tax assets     576,422 303,970 100,472
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (475,950) 272,452    
Employee benefit          
Analysis of consolidated deferred taxes          
Deferred tax assets     15,191   10,432
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (7,609) 2,934    
Financial instruments          
Analysis of consolidated deferred taxes          
Deferred tax assets     7,948   2,293
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits     (22)    
Employee profit sharing          
Analysis of consolidated deferred taxes          
Deferred tax assets     4,323   1,870
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (2,453) (2,904)    
Non derivative financial instruments          
Analysis of consolidated deferred taxes          
Deferred tax assets     473,242    
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   473,242 (477,471)    
Deferred tax liabilities.          
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   278,651 156,604    
Right of use asset          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     10,292,753   9,552,956
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (739,797) 55,824    
Supplemental rent          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     1,878,865   1,303,975
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   (574,890) 171,916    
Rotable spare parts, furniture and equipment, net.          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     707,092   1,270,758
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   563,666 (177,384)    
Provisions          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     91,253   539,911
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   448,658 442,598    
Inventories          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     83,402   87,592
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   4,190 (6,885)    
Other prepayments          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     9,786   22,907
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   13,121 (17,942)    
Prepaid expenses and other assets          
Analysis of consolidated deferred taxes          
Deferred tax liabilities     132,462   431,241
Reconciliation of deferred tax liability, net          
Deferred income tax (expense) benefit during the current year recorded on profits   563,703 (311,523)    
Guatemala          
Analysis of consolidated deferred taxes          
Net operating loss   664 1,835    
Guatemala | Tax losses available for offsetting against future taxable income          
Analysis of consolidated deferred taxes          
Net operating loss       1,085  
Costa Rica          
Analysis of consolidated deferred taxes          
Deferred tax assets     0 0 $ 0
Costa Rica | Tax losses available for offsetting against future taxable income          
Analysis of consolidated deferred taxes          
Net operating loss   122,427 55,751 50,246  
El Salvador          
Analysis of consolidated deferred taxes          
Net operating loss   $ 53,550 $ 16,619 $ 32,494