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

Return flights

18 Sep - 28 Sep	Iberia
15 Sep - 22 Sep	Iberia
15 Sep - 28 Sep	Iberia
12 Sep - 27 Sep	Iberia
18 Sep - 25 Sep	Iberia
18 Sep - 29 Sep	Iberia
10 Sep - 28 Sep	Iberia
12 Sep - 25 Sep	Iberia
22 Sep - 30 Sep	Iberia
05 Sep - 28 Sep	Iberia
30 Sep - 16 Oct	Iberia
30 Sep - 28 Oct	Iberia
10 Sep - 09 Oct	Iberia
25 Sep - 30 Oct	Iberia
26 Sep - 25 Oct	Iberia
20 Sep - 04 Oct	Iberia
26 Sep - 08 Oct	Iberia
26 Sep - 06 Oct	Iberia
10 Sep - 10 Oct	Iberia
09 Sep - 12 Oct	Iberia

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

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 Barcelona to Mexico City in September from $611

Return flights