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

Return flights

24 Aug - 02 Sep	Finnair
15 Aug - 26 Aug	Delta
10 Aug - 29 Aug	Delta
11 Aug - 31 Aug	Delta
01 Aug - 31 Aug	Delta
04 Aug - 28 Aug	Delta
18 Aug - 30 Aug	Delta
12 Aug - 26 Aug	Delta
08 Aug - 26 Aug	Delta
04 Aug - 25 Aug	Delta
15 Aug - 31 Aug	Delta
24 Aug - 01 Sep	Delta
06 Aug - 17 Sep	Delta
04 Aug - 08 Sep	Delta
14 Aug - 10 Sep	Delta
02 Aug - 15 Sep	Delta
14 Aug - 03 Sep	Delta
29 Aug - 09 Sep	Delta
14 Aug - 01 Sep	Delta
13 Aug - 03 Sep	Delta

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

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 August from 657€

Return flights