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

Return flights

19 Sep - 03 Oct	Air Canada
25 Sep - 10 Oct	Air Canada
11 Sep - 24 Sep	Lufthansa
12 Sep - 27 Sep	Air Canada
12 Sep - 21 Sep	Air Canada
12 Sep - 03 Oct	Air Canada
11 Sep - 19 Sep	Air Canada
05 Sep - 13 Sep	Air Canada
05 Sep - 19 Sep	Air Canada
03 Sep - 24 Sep	SWISS
11 Sep - 01 Oct	Lufthansa
04 Sep - 13 Sep	SWISS
03 Sep - 14 Sep	SWISS
09 Sep - 16 Sep	United
25 Sep - 11 Oct	United
25 Sep - 05 Oct	United
29 Sep - 11 Oct	United
30 Sep - 18 Oct	United
22 Sep - 09 Oct	SWISS
22 Sep - 02 Oct	United

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 522€

Return flights