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

Return flights

10 Sep - 24 Sep	SWISS
04 Sep - 01 Oct	SWISS
25 Sep - 11 Oct	Air Canada
27 Sep - 11 Oct	Air Canada
02 Sep - 02 Oct	Air Canada
06 Sep - 13 Sep	Air Canada
13 Sep - 20 Sep	Air Canada
05 Sep - 12 Sep	Air Canada
05 Sep - 14 Sep	Air Canada
05 Sep - 27 Sep	Air Canada
30 Sep - 10 Oct	Air Canada
19 Sep - 03 Oct	Air Canada
25 Sep - 14 Oct	Lufthansa
29 Sep - 16 Oct	Air France
05 Sep - 25 Sep	United
13 Sep - 26 Sep	United
01 Sep - 07 Sep	United
02 Sep - 15 Sep	United
26 Sep - 10 Oct	United
08 Sep - 03 Oct	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 $613

Return flights