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

Return flights

10 Sep - 24 Sep	SWISS
09 Sep - 24 Sep	SWISS
11 Sep - 24 Sep	SWISS
11 Sep - 27 Sep	Air Canada
11 Sep - 26 Sep	Air Canada
12 Sep - 26 Sep	Air Canada
11 Sep - 28 Sep	Air Canada
12 Sep - 27 Sep	Air Canada
25 Sep - 06 Oct	Air Canada
06 Sep - 13 Sep	Air Canada
01 Sep - 24 Sep	Brussels Airlines
26 Sep - 05 Oct	United
26 Sep - 07 Oct	United
20 Sep - 18 Oct	United
21 Sep - 01 Oct	Delta

Also check the deals for one-way flights from Barcelona to San Jose 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 San Jose in September from 520€

Return flights