The average price of a hedging instrument. [Refer: Hedging instruments [member]]

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The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]

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The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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The nominal amount of a hedging instrument. [Refer: Hedging instruments [member]]

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The amount of reclassification adjustments related to change in value of time value of options, before tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Other comprehensive income]

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A component of equity representing the accumulated change in the value of the time value of options when separating the intrinsic value and time value of an option contract and designating as the hedging instrument only the changes in the intrinsic value.

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The amount of intrinsic value recycled to the fuel cost.

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The percentage of expected consumption hedged as of the reporting date.

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The upward or downward change in the relevant risk variable percentage used for sensitivity analysis of types of risk to which the entity is exposed. Used to calculate how profit or loss and equity would have been affected by changes in the relevant risk variable that were reasonably possible as of the reporting date.

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Financial instruments and risk management - Jet fuel price risk (Details) gal in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 MXN ($) gal $ / gal	Dec. 31, 2018 MXN ($) gal $ / gal	Dec. 31, 2017 MXN ($) gal $ / gal
Jet fuel price risk
Fair value of derivative financial liabilities \| $			$ 122,948
Intrinsic value recycled to the fuel cost \| $		$ 9,477
Loss from derivatives financial instruments recognized in consolidated statements of operations \| $		$ (67,629)	$ 455,009	$ (52,097)
Jet fuel
Jet fuel price risk
Percentage of operating expenses	38.00%	38.00%	38.00%	31.00%
Jet fuel Asian call options
Jet fuel price risk
Notional volume (in gallons) \| gal		13,492
Fair value of derivative financial assets \| $			$ 48,199	$ 497,403
Cost of hedging recognized in other comprehensive income \| $		$ 133,567	134,096	163,836
Extrinsic value of options recycled to cost \| $		$ 61,067	$ (402,493)	$ 26,980
Jet fuel Asian call options \| Within one year
Jet fuel price risk
Notional volume (in gallons) \| gal			26,632	131,381
Strike price agreed rate			1.8400	1.7447
Approximate percentage of hedge (of expected consumption value)			10.00%	55.00%
Jet fuel Asian call options \| Within six months
Jet fuel price risk
Notional volume (in gallons) \| gal			12,790	69,518
Strike price agreed rate			1.8400	1.6861
Approximate percentage of hedge (of expected consumption value)			10.00%	60.00%
Jet fuel Asian call options \| Between six months and one year
Jet fuel price risk
Notional volume (in gallons) \| gal			13,842	61,863
Strike price agreed rate			1.8400	1.8106
Approximate percentage of hedge (of expected consumption value)			10.00%	50.00%
Jet fuel Zero-Cost collars
Jet fuel price risk
Notional volume (in gallons) \| gal		70,136	45,600	61,100
Fair value of derivative financial assets \| $		$ 133,567
Fair value of derivative financial liabilities \| $			$ 122,948
Upward/downward movement in the spot price of the US Gulf Coast Jet 54	5.00%	5.00%
Effect of upward movement in spot price on accumulated other comprehensive income \| $	$ 4,520.00
Effect of downward movement in spot price on accumulated other comprehensive income \| $	$ (4,520.00)
Jet fuel Zero-Cost collars \| Within one year
Jet fuel price risk
Notional volume (in gallons) \| gal		56,644	18,963
Approximate percentage of hedge (of expected consumption value)		20.00%	15.00%
Jet fuel Zero-Cost collars \| Within one year \| Minimum
Jet fuel price risk
Strike price agreed rate		1.82	1.91
Jet fuel Zero-Cost collars \| Within one year \| Maximum
Jet fuel price risk
Strike price agreed rate			2.46
Jet fuel Zero-Cost collars \| Within one year \| Jet fuel \| Minimum
Jet fuel price risk
Strike price agreed rate		1.64
Jet fuel Zero-Cost collars \| Within one year \| Jet fuel \| Maximum
Jet fuel price risk
Strike price agreed rate		1.82
Jet fuel Zero-Cost collars \| Within six months
Jet fuel price risk
Notional volume (in gallons) \| gal		34,480	18,963
Approximate percentage of hedge (of expected consumption value)		25.00%	15.00%
Jet fuel Zero-Cost collars \| Within six months \| Minimum
Jet fuel price risk
Strike price agreed rate			1.91
Jet fuel Zero-Cost collars \| Within six months \| Maximum
Jet fuel price risk
Strike price agreed rate			2.46
Jet fuel Zero-Cost collars \| Within six months \| Jet fuel \| Minimum
Jet fuel price risk
Strike price agreed rate		1.63
Jet fuel Zero-Cost collars \| Within six months \| Jet fuel \| Maximum
Jet fuel price risk
Strike price agreed rate		1.82
Jet fuel Zero-Cost collars \| Between six months and one year
Jet fuel price risk
Notional volume (in gallons) \| gal		22,164
Approximate percentage of hedge (of expected consumption value)		15.00%
Jet fuel Zero-Cost collars \| Between six months and one year \| Jet fuel \| Minimum
Jet fuel price risk
Strike price agreed rate		1.65
Jet fuel Zero-Cost collars \| Between six months and one year \| Jet fuel \| Maximum
Jet fuel price risk
Strike price agreed rate		1.81
All-in \| Within one year
Jet fuel price risk
Approximate percentage of hedge (of expected consumption value)		20.00%	18.00%
All-in \| Within six months
Jet fuel price risk
Approximate percentage of hedge (of expected consumption value)		25.00%	25.00%
All-in \| Between six months and one year
Jet fuel price risk
Approximate percentage of hedge (of expected consumption value)		15.00%	10.00%