AirHint found the following cheapest return flights from Berlin (BER) to San Jose (SJO) in September 2025 (see full year).

Return flights

18 Sep - 28 Oct	Lufthansa
09 Sep - 24 Sep	SWISS
18 Sep - 01 Oct	SWISS
18 Sep - 03 Oct	SWISS
11 Sep - 17 Sep	SWISS
18 Sep - 02 Oct	Air France
25 Sep - 09 Oct	Air France
18 Sep - 04 Oct	Air France
09 Sep - 15 Sep	United
03 Sep - 15 Sep	Lufthansa
05 Sep - 15 Sep	Lufthansa
08 Sep - 28 Sep	Lufthansa
09 Sep - 23 Sep	Lufthansa
25 Sep - 07 Oct	United
25 Sep - 12 Oct	United
18 Sep - 30 Sep	United
04 Sep - 20 Sep	Lufthansa
12 Sep - 27 Sep	Lufthansa
20 Sep - 03 Oct	Lufthansa
30 Sep - 14 Oct	Lufthansa

Also check the deals for one-way flights from Berlin to San Jose in September.

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 Berlin to San Jose in September from 504€

Return flights