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Income tax - Tax loss carry-forward (Details) - MXN ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Available tax loss carry-forward |  |
Historical Loss | $ 1,478,746 |
Restated tax loss | 1,518,008 |
Utilized | 16,378 |
Total remaining amount | 1,501,630 | $ 111,083
Tax balances |  |
Restated contributed capital account (CUCA) | 3,737,048 |
CUFIN | 2,558,378 |
Comercializadora Volaris, S.A. de C.V. |  |
Available tax loss carry-forward |  |
Historical Loss | 52,221 |
Restated tax loss | 56,573 |
Utilized | 16,378 |
Total remaining amount | 40,195 |
Concesionaria |  |
Available tax loss carry-forward |  |
Historical Loss | 1,067,836 |
Restated tax loss | 1,102,726 |
Total remaining amount | 1,102,726 |
Operaciones Volaris |  |
Available tax loss carry-forward |  |
Historical Loss | 662 |
Restated tax loss | 682 |
Total remaining amount | 682 |
Vuela, S.A. |  |
Available tax loss carry-forward |  |
Historical Loss | 358,027 |
Restated tax loss | 358,027 |
Total remaining amount | 358,027 |
2016, Expiration 2019 |  |
Available tax loss carry-forward |  |
Historical Loss | 57,414 |
Restated tax loss | 57,414 |
Total remaining amount | 57,414 |
2016, Expiration 2026 |  |
Available tax loss carry-forward |  |
Historical Loss | 52,221 |
Restated tax loss | 56,573 |
Utilized | 16,378 |
Total remaining amount | 40,195 |
2017, Expiration 2020 |  |
Available tax loss carry-forward |  |
Historical Loss | 300,613 |
Restated tax loss | 300,613 |
Total remaining amount | 300,613 |
2017, Expiration 2027 |  |
Available tax loss carry-forward |  |
Historical Loss | 1,068,498 |
Restated tax loss | 1,103,408 |
Total remaining amount | $ 1,103,408 |

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