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

Return flights

07 Apr - 14 Apr	Air Canada
23 Apr - 14 May	Air Canada
15 Apr - 07 May	Air Canada
27 Apr - 11 May	United
14 Apr - 26 Apr	Air Canada
15 Apr - 29 Apr	United
22 Apr - 09 May	United
24 Apr - 09 May	United
23 Apr - 09 May	United
24 Apr - 10 May	Air Canada
02 Apr - 16 Apr	KLM
18 Apr - 05 May	KLM
25 Apr - 16 May	United
25 Apr - 12 May	KLM
10 Apr - 24 Apr	Air Canada
16 Apr - 28 Apr	Air Canada
11 Apr - 24 Apr	Air Canada
01 Apr - 08 Apr	United
14 Apr - 25 Apr	United
21 Apr - 30 Apr	United

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 $631

Return flights