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

Return flights

25 Sep - 29 Oct	Air Canada
16 Sep - 16 Oct	Ryanair
17 Sep - 24 Sep	Ryanair
18 Sep - 16 Oct	Air France
17 Sep - 16 Oct	Air France
16 Sep - 06 Oct	Air France
24 Sep - 28 Sep	United
22 Sep - 28 Sep	United
26 Sep - 29 Oct	United
29 Sep - 06 Oct	United
23 Sep - 06 Oct	United
27 Sep - 11 Oct	United
26 Sep - 11 Oct	United
21 Sep - 28 Sep	easyJet
18 Sep - 30 Sep	Vueling Airlines
19 Sep - 21 Sep	Ryanair
19 Sep - 26 Sep	Ryanair
15 Sep - 29 Sep	Air Europa
18 Sep - 25 Sep	Vueling Airlines
15 Sep - 24 Sep	Air Europa

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 575€

Return flights