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

Return flights

23 Sep - 31 Oct	Scandinavian Airlines
23 Sep - 14 Oct	Scandinavian Airlines
30 Sep - 22 Oct	Scandinavian Airlines
29 Sep - 06 Oct	SWISS
15 Sep - 25 Sep	Scandinavian Airlines
23 Sep - 01 Oct	Aer Lingus
22 Sep - 25 Sep	Condor
15 Sep - 29 Sep	Scandinavian Airlines
23 Sep - 30 Sep	Hawaiian Airlines
16 Sep - 28 Sep	TAP
15 Sep - 19 Sep	Condor
18 Sep - 28 Sep	Frontier Airlines
13 Sep - 18 Sep	WestJet
28 Sep - 18 Oct	Iberia
13 Sep - 17 Sep	WestJet
29 Sep - 11 Oct	Turkish Airlines
17 Sep - 28 Sep	Flair Airlines
22 Sep - 18 Oct	Frontier Airlines
15 Sep - 02 Oct	Aer Lingus
27 Sep - 05 Oct	Frontier Airlines

Also check the deals for one-way flights from San Francisco to Amsterdam 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 San Francisco to Amsterdam in September from 453€

Return flights