AirHint found the following cheapest return flights from Barcelona (BCN) to San Jose (SJO) in August 2025 (see full year).

Return flights

29 Aug - 10 Sep	Air Canada
27 Aug - 07 Sep	United
27 Aug - 11 Sep	United
30 Aug - 13 Sep	Air Canada
29 Aug - 05 Sep	United
31 Aug - 16 Sep	United
25 Aug - 15 Sep	Iberia
23 Aug - 21 Sep	Delta
15 Aug - 07 Sep	Delta
23 Aug - 02 Sep	Delta
22 Aug - 30 Aug	Delta
15 Aug - 28 Aug	Delta
15 Aug - 27 Aug	Delta
17 Aug - 27 Aug	Delta
17 Aug - 28 Aug	Delta
18 Aug - 28 Aug	Delta
14 Aug - 27 Aug	Delta
07 Aug - 15 Aug	Delta
16 Aug - 28 Aug	Delta
07 Aug - 28 Aug	Delta

Also check the deals for one-way flights from Barcelona to San Jose 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 Barcelona to San Jose in August from 525€

Return flights