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

Return flights

24 Sep - 01 Oct	easyJet
12 Sep - 28 Sep	easyJet
19 Sep - 26 Sep	easyJet
08 Sep - 19 Oct	Iberia
12 Sep - 26 Sep	easyJet
08 Sep - 15 Sep	Air Europa
27 Sep - 11 Oct	easyJet
03 Sep - 03 Oct	Air France
13 Sep - 27 Sep	easyJet
06 Sep - 13 Sep	SWISS
07 Sep - 15 Sep	SWISS
13 Sep - 26 Sep	easyJet
26 Sep - 11 Oct	easyJet
05 Sep - 13 Sep	easyJet
05 Sep - 25 Sep	TAP
03 Sep - 03 Oct	SWISS	direct

Also check the deals for one-way flights from Zurich 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 Zurich to San Jose in September from 682€

Return flights