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

Return flights

07 May - 28 May	SWISS
05 May - 23 Jun	SWISS
05 May - 19 May	SWISS
05 May - 26 May	SWISS
26 May - 04 Jun	SWISS
02 May - 23 May	Lufthansa	direct
04 May - 18 May	Air Canada
01 May - 15 May	Air Canada
16 May - 30 May	Lufthansa
01 May - 16 May	United
01 May - 22 May	Air Canada
07 May - 30 May	SWISS

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 542€

Return flights