AirHint found the following cheapest return flights from Frankfurt (FRA) to San Jose (SJO) in June 2025 (see full year).

Return flights

16 Jun - 25 Jul	KLM
16 Jun - 22 Jul	KLM
25 Jun - 06 Jul	Air Canada
23 Jun - 29 Jun	Air Canada
25 Jun - 25 Jul	Air Canada
25 Jun - 10 Jul	Air Canada
23 Jun - 15 Jul	KLM
26 Jun - 26 Jul	KLM
26 Jun - 07 Jul	KLM
25 Jun - 15 Jul	United
26 Jun - 24 Jul	KLM
16 Jun - 25 Jun	KLM
16 Jun - 30 Jun	KLM
16 Jun - 29 Jun	KLM
15 Jun - 30 Jun	Condor
13 Jun - 15 Jun	KLM
26 Jun - 30 Jun	KLM
13 Jun - 29 Jun	KLM
17 Jun - 29 Jun	Air Canada
26 Jun - 29 Jun	KLM

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

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 June from $600

Return flights