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Description of the business and summary of significant accounting policies - Relevant events (Details) $ in Billions | Dec. 11, 2020 $ / shares shares | Feb. 24, 2020 | Jun. 20, 2019 MXN ($) item | Feb. 16, 2018 shares | Nov. 10, 2016 | Feb. 17, 2010 | May 09, 2005
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Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Notes issued | $ |  |  | $ 1.5 |  |  |  |
Authorized amount under the program | $ |  |  | $ 3.0 |  |  |  |
Maturity of notes |  |  | 5 years |  |  |  |
Term of authorization to provide air transportation services |  | 20 years |  |  |  |  |
Concesionaria |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Term of authorization to provide air transportation services |  |  |  |  |  | 10 years | 5 years
Volaris Costa Rica |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Term of authorization to provide air transportation services |  |  |  |  | 5 years |  |
28-day TIIE |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Basis points |  |  | 1.75% |  |  |  |
Asset backed trust notes ("CEBUR"), in Mexican pesos |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Number of notes issued | item |  |  | 15,000,000 |  |  |  |
Notes issued | $ |  |  | $ 1.5 |  |  |  |
Authorized amount under the program | $ |  |  | $ 3.0 |  |  |  |
Maturity of notes |  |  | 5 years |  |  |  |
Basis points |  |  | 1.75% |  |  |  |
Series B shares |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Conversion of equivalent number of shares |  |  |  | 45,968,598 |  |  |
Series A shares |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Number of shares per CPO | 1 |  |  |  |  |  |
American Depositary Shares |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Weighted average share price | $ / shares | $ 11.25 |  |  |  |  |  |
Number of CPOs per ADS | 10 |  |  |  |  |  |
Primary follow-on equity offering |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Number of shares offered | 134,000,000 |  |  |  |  |  |
Over-allotment | American Depositary Shares |  |  |  |  |  |  |
Description of the business and summary of significant accounting policies |  |  |  |  |  |  |
Number of shares issued | 20,100,000 |  |  |  |  |  |

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