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

Return flights

30 Sep - 20 Oct	Air Canada
24 Sep - 28 Sep	Air Canada
24 Sep - 29 Sep	Air Canada
27 Sep - 28 Sep	Air Canada
25 Sep - 29 Sep	Air Canada
23 Sep - 30 Sep	Air Canada
26 Sep - 28 Sep	Air Canada
25 Sep - 28 Sep	Air Canada
30 Sep - 06 Oct	Air Canada
24 Sep - 06 Oct	Air Canada
27 Sep - 01 Oct	Air Canada
27 Sep - 19 Oct	Air Canada
22 Sep - 01 Oct	Air Canada
24 Sep - 01 Oct	Air Canada
26 Sep - 05 Oct	Air Canada
24 Sep - 24 Oct	Air Canada
22 Sep - 22 Oct	Air Canada
22 Sep - 29 Sep	Air Canada
26 Sep - 29 Sep	Air Canada
20 Sep - 27 Sep	United

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 464€

Return flights