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

Return flights

18 Apr - 28 Apr	Air Canada
10 Apr - 26 Apr	Air Canada
07 Apr - 28 Apr	Air Canada
01 Apr - 15 Apr	Air Canada
30 Apr - 23 May	SWISS
02 Apr - 23 Apr	United
24 Apr - 02 May	Lufthansa
18 Apr - 05 May	KLM
16 Apr - 07 May	KLM
02 Apr - 24 Apr	United
09 Apr - 25 Apr	United
12 Apr - 26 Apr	United
25 Apr - 02 May	United
02 Apr - 18 Apr	Air France
25 Apr - 02 May	Lufthansa	direct
04 Apr - 16 Apr	United
24 Apr - 15 May	KLM
18 Apr - 05 May	Lufthansa	direct
18 Apr - 02 May	United
11 Apr - 02 May	Lufthansa	direct

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

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 April from 519€

Return flights