AirHint found the following cheapest return flights from Frankfurt (FRA) to San Jose (SJO) in May 2026 (see full year).

Return flights

05 May - 19 May	SWISS
14 May - 26 May	SWISS
19 May - 26 May	SWISS
12 May - 26 May	SWISS
14 May - 11 Jun	SWISS
28 May - 11 Jun	Lufthansa
20 May - 30 May	Air Canada
12 May - 26 May	Lufthansa	direct
19 May - 26 May	Lufthansa	direct
28 May - 11 Jun	Lufthansa	direct
05 May - 30 May	Air Canada
06 May - 13 May	Air Canada
22 May - 06 Jun	Air France
23 May - 02 Jun	Lufthansa	direct
22 May - 22 May	Air France

Also check the deals for one-way flights from Frankfurt to San Jose in May.

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 Frankfurt to San Jose in May from $636

Return flights