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

Return flights

29 Aug - 16 Sep	Air France
27 Aug - 17 Sep	Air France
29 Aug - 17 Sep	Air France
18 Aug - 01 Sep	Lufthansa
29 Aug - 19 Sep	Air France
21 Aug - 31 Aug	Air Canada
29 Aug - 15 Sep	Air France
22 Aug - 15 Sep	Lufthansa
27 Aug - 10 Sep	United
23 Aug - 06 Sep	Air Canada
25 Aug - 08 Sep	United
20 Aug - 30 Aug	Air France
27 Aug - 31 Aug	United
25 Aug - 29 Aug	United
24 Aug - 25 Aug	United
20 Aug - 28 Aug	United
18 Aug - 31 Aug	United
15 Aug - 16 Aug	SWISS
17 Aug - 31 Aug	Air Canada
11 Aug - 15 Aug	KLM

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

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 August from 583€

Return flights