AirHint found the following cheapest return flights from Madrid (MAD) to Mexico City (MEX) in December 2025 (see full year).

Return flights

08 Dec - 15 Jan	Air Canada
08 Dec - 22 Jan	Air Canada
03 Dec - 09 Dec	Air Canada
04 Dec - 09 Dec	Air Canada
05 Dec - 07 Dec	Air Canada
02 Dec - 13 Jan	United
03 Dec - 12 Jan	United
09 Dec - 13 Jan	United
02 Dec - 09 Dec	Lufthansa
03 Dec - 08 Dec	Lufthansa
04 Dec - 08 Dec	Iberia
02 Dec - 16 Dec	Iberia
05 Dec - 08 Dec	United
02 Dec - 17 Dec	Iberia
08 Dec - 15 Dec	Iberia
11 Dec - 19 Jan	Finnair
11 Dec - 17 Jan	Finnair
29 Dec - 15 Jan	Air Canada
04 Dec - 01 Jan	Iberia	direct
14 Dec - 16 Jan	Iberia

Also check the deals for one-way flights from Madrid to Mexico City in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Madrid to Mexico City in December from $521

Return flights