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

Return flights

26 Sep - 16 Oct	Air Canada
22 Sep - 06 Oct	Air Canada
25 Sep - 09 Oct	Air Canada
26 Sep - 09 Oct	Air Canada
29 Sep - 06 Oct	Air Canada
26 Sep - 01 Oct	Air Canada
24 Sep - 08 Oct	Air Canada
23 Sep - 11 Oct	Air Canada
25 Sep - 10 Oct	Air Canada
26 Sep - 10 Oct	Air Canada
26 Sep - 29 Sep	United
16 Sep - 28 Sep	Air Canada
18 Sep - 28 Sep	Air Canada
17 Sep - 26 Sep	Air Canada
19 Sep - 26 Sep	Air Canada
16 Sep - 26 Sep	Air Canada
18 Sep - 21 Sep	Fly Play
18 Sep - 25 Sep	United
19 Sep - 29 Sep	United
16 Sep - 30 Sep	United

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 521€

Return flights