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

Return flights

11 Sep - 28 Sep	Air Canada
12 Sep - 20 Sep	Air Canada
11 Sep - 21 Sep	Air Canada
05 Sep - 21 Sep	Air Canada
16 Sep - 28 Oct	SWISS
04 Sep - 19 Sep	SWISS
12 Sep - 24 Sep	SWISS
05 Sep - 19 Sep	SWISS
11 Sep - 20 Sep	Air Canada
13 Sep - 26 Sep	Air Canada
06 Sep - 19 Sep	Air Canada
23 Sep - 06 Oct	Lufthansa
15 Sep - 27 Oct	United
29 Sep - 06 Oct	Vueling Airlines
26 Sep - 10 Oct	Air Canada
19 Sep - 07 Oct	Ryanair
15 Sep - 03 Oct	WestJet
08 Sep - 10 Oct	Lufthansa
30 Sep - 25 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 538€

Return flights