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

Return flights

20 Oct - 13 Nov	Aeromexico
28 Oct - 16 Nov	Volaris
01 Oct - 16 Oct	Aeromexico
29 Oct - 12 Nov	British Airways
15 Oct - 06 Nov	Aeromexico
05 Oct - 10 Oct	Aeromexico
28 Oct - 13 Nov	Iberia
08 Oct - 15 Oct	Iberia
15 Oct - 22 Oct	Aeromexico
07 Oct - 16 Oct	Viva Aerobus
05 Oct - 13 Oct	British Airways
05 Oct - 20 Oct	British Airways
09 Oct - 14 Oct	British Airways
13 Oct - 20 Oct	British Airways
12 Oct - 20 Oct	Iberia
25 Oct - 15 Nov	Iberia
05 Oct - 02 Nov	British Airways
31 Oct - 03 Nov	Iberia
16 Oct - 08 Nov	Iberia
24 Oct - 02 Nov	British Airways

Also check the deals for one-way flights from Mexico City to Barcelona in October.

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 October from $761

Return flights