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Accounts receivable - Net: (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Accounts receivable - Net: |
Schedule of accounts receivable - net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2020 |  | 2021
Clients |  | Ps. | 1,458,653 |  | Ps. | 2,191,439
Less: impairment provision |  | ​ | (346,183) |  | ​ | (317,664)
​ | ​ | ​ | 1,112,470 | ​ | ​ | 1,873,775
Notes receivable from clients | ​ | ​ | 245,757 | ​ | ​ | 4,463
Total accounts receivable |  | Ps. | 1,358,227 |  | Ps. | 1,878,238
Schedule of maturity analysis of past due accounts receivable and movements in impairment provision | ​
​ | ​ | ​ | ​
​ | ​ | ​ | ​
Provision for impairment at January 1, 2020 |  | Ps. | 191,766
Mexico's increase during the period | ​ | ​ | 70,470
Aerostar's increase during the period | ​ | ​ | 50,842
Airplan’s increase during the period | ​ | ​ | 33,105
Provision for impairment at December 31, 2020 | ​ | Ps. | 346,183
Mexico's increase during the period | ​ | Ps. | 9,331
Application of Aerostar's estimate during the period | ​ | ​ | (36,275)
Application of Airplan's estimate during the period | ​ | ​ | (1,575)
Provision for impairment at December 31, 2021 | ​ | Ps. | 317,664
Schedule of provision for losses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Due to | ​ |  | ​ |  | ​ |  | ​ | More than |
​ |  | expire |  | 1 to 90 |  | 91 to 180 |  | 181 to 365 |  | 365 |
Expected loss rate 2020: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mexico |  | 0.00 | % | 0.02 | % | 19.20 | % | 100 | % | 100 | %
Aerostar |  | 5.40 | % | 5.10 | % | 43.70 | % | 87.50 | % | 100 | %
Airplan |  | 0.83 | % | 0.70 | % | 0.83 | % | 100 | % | 100 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Due to | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | More | ​ | Total estimate
​ |  | expire |  | 1 to 90 |  | 91 to 180 |  | 181 to 365 |  | than 365 |  | 12/31/2020
At December 31, 2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mexico’s accounts receivables | ​ | Ps. | 474,854 | ​ | Ps. | 59,819 | ​ | Ps. | 14,292 | ​ | Ps. | 66,816 | ​ | Ps. | 129,056 | ​ | ​ | —
Mexico’s provision impairment |  | ​ |  |  | ​ | 784 |  | ​ | 2,744 |  | ​ | 66,816 |  | ​ | 129,056 |  | Ps. | 199,400
Aerostar’s account receivables |  | ​ | 444,515 |  | ​ | 60,421 |  | ​ | 3,702 |  | ​ | 4,896 |  | ​ | 55,360 |  | ​ | —
Aerostar’s provision impairment |  | ​ | 23,984 |  | ​ | 3,084 |  | ​ | 1,619 |  | ​ | 4,284 |  | ​ | 55,360 |  | ​ | 88,331
Airplan’s accounts receivables |  | ​ | — |  | ​ | 73,865 |  | ​ | 1,610 |  | ​ | 37,214 |  | ​ | 32,233 |  | ​ | —
Airplan’s provision impairment |  | ​ | — |  | ​ | 516 |  | ​ | 110 |  | ​ | 25,593 |  | ​ | 32,233 |  | ​ | 58,452
Total estimate | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Ps. | 346,183
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Due to | ​ | ​ | ​ | ​ | ​ | ​ | ​ | More than |
​ |  | expire |  | 1 to 90 |  | 91 to 180 |  | 181 to 365 |  | 365 |
Expected loss rate 2021: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mexico |  | 0.00 | % | 0.02 | % | 19.20 | % | 100.00 | % | 100.00 | %
Aerostar |  | 5.40 | % | 5.10 | % | 43.70 | % | 87.50 | % | 100.00 | %
Airplan |  | 0.83 | % | 0.83 | % | 0.83 | % | 100.00 | % | 100.00 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Due to | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | More | ​ | Total estimate
​ |  | expire |  | 1 to 90 |  | 91 to 180 |  | 181 to 365 |  | than 365 |  | 12/31/2021
At December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Mexico’s accounts receivables |  | Ps. | 1,487,553 |  | Ps. | 44,571 |  | Ps. | 6,429 |  | Ps. | 78,432 |  | Ps. | 129,056 |  | ​ | —
Mexico’s provision impairment |  | ​ | ​ |  | ​ | 9 |  | ​ | 1,234 |  | ​ | 78,432 |  | ​ | 129,056 |  | Ps. | 208,731
Aerostar’s account receivables |  | ​ | 140,588 |  | ​ | 98,868 |  | ​ | 63,952 |  | ​ | 772 |  | ​ | 10,734 |  | ​ | —
Aerostar’s provision impairment |  | ​ | 7,657 |  | ​ | 5,042 |  | ​ | 27,947 |  | ​ | 676 |  | ​ | 10,734 |  | ​ | 52,056
Airplan’s accounts receivables |  | ​ |  |  | ​ | 82,638 |  | ​ | 561 |  | ​ | 22,807 |  | ​ | 24,478 |  | ​ | —
Airplan’s provision impairment |  | ​ |  |  | ​ | 9,030 |  | ​ | 561 |  | ​ | 22,807 |  | ​ | 24,478 |  | ​ | 56,877
Total estimate |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | Ps. | 317,664
​

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