AirHint found the following cheapest return flights from Amsterdam (AMS) to San Jose (SJO) in September 2026 (see full year).

Return flights

10 Sep - 17 Oct	Air Canada
17 Sep - 17 Oct	Air Canada
10 Sep - 19 Sep	Air Canada
01 Sep - 13 Sep	Air Canada
18 Sep - 18 Oct	Air Canada
11 Sep - 20 Sep	United
03 Sep - 24 Sep	United
03 Sep - 17 Sep	United
01 Sep - 22 Sep	United
05 Sep - 26 Sep	United
03 Sep - 15 Sep	Lufthansa
12 Sep - 19 Oct	Air Canada
03 Sep - 19 Sep	United
03 Sep - 15 Sep	KLM	direct
29 Sep - 02 Oct	Delta
17 Sep - 17 Oct	KLM	direct
10 Sep - 17 Oct	KLM	direct

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to San Jose in September from 550€

Return flights