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

Return flights

10 Dec - 10 Jan	Volaris
07 Dec - 26 Jan	Air Canada
04 Dec - 07 Dec	Iberia
05 Dec - 15 Dec	Viva
01 Dec - 16 Dec	Air Canada
02 Dec - 08 Dec	Air France
30 Dec - 14 Jan	Delta
30 Dec - 17 Jan	Iberia
08 Dec - 15 Dec	Volaris
07 Dec - 16 Dec	Air Canada
25 Dec - 14 Jan	Delta
29 Dec - 19 Jan	Iberia
28 Dec - 19 Jan	Iberia
28 Dec - 14 Jan	Iberia
29 Dec - 14 Jan	Iberia
25 Dec - 16 Jan	Delta
24 Dec - 31 Dec	Iberia
01 Dec - 12 Dec	Iberia
10 Dec - 17 Dec	Aeromexico
13 Dec - 31 Dec	Iberia

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 583€

Return flights