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

Return flights

22 Sep - 24 Sep	Condor
22 Sep - 02 Oct	Condor
29 Sep - 13 Oct	Condor
24 Sep - 28 Sep	Turkish Airlines
11 Sep - 22 Sep	Condor
11 Sep - 18 Sep	Condor
19 Sep - 27 Sep	Turkish Airlines
27 Sep - 08 Oct	Frontier Airlines
25 Sep - 18 Oct	Condor
21 Sep - 04 Oct	Condor
16 Sep - 11 Oct	Condor
11 Sep - 04 Oct	Condor
10 Sep - 04 Oct	Condor
24 Sep - 01 Oct	SWISS	direct
22 Sep - 02 Oct	SWISS	direct
17 Sep - 26 Sep	United	direct
22 Sep - 24 Sep	SWISS	direct
24 Sep - 28 Sep	SWISS	direct
19 Sep - 27 Sep	SWISS	direct
11 Sep - 22 Sep	SWISS	direct

Also check the deals for one-way flights from San Francisco to Zurich 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 Zurich in September from 460€

Return flights