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

Return flights

07 Dec - 16 Dec	Air Canada
01 Dec - 15 Dec	Air Canada
01 Dec - 11 Dec	Air Canada
04 Dec - 08 Dec	Iberia
02 Dec - 08 Dec	United
04 Dec - 11 Dec	Iberia
04 Dec - 10 Dec	Iberia
11 Dec - 13 Jan	Mexicana
25 Dec - 01 Jan	Delta
10 Dec - 31 Dec	Delta
03 Dec - 09 Jan	Air France
04 Dec - 09 Jan	Air France
04 Dec - 12 Dec	Iberia
24 Dec - 12 Jan	Delta
02 Dec - 07 Jan	Air France
25 Dec - 10 Jan	Delta
04 Dec - 08 Jan	Delta
05 Dec - 11 Jan	Delta
01 Dec - 12 Dec	Iberia
21 Dec - 01 Jan	Air France

Also check the deals for one-way flights from Mexico City to Barcelona 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 Mexico City to Barcelona in December from 620€

Return flights