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

Return flights

03 Dec - 17 Dec	Air Canada
03 Dec - 10 Dec	United	direct
03 Dec - 17 Dec	SWISS	direct
10 Dec - 09 Jan	SWISS	direct
08 Dec - 22 Dec	Air Canada
11 Dec - 25 Dec	SWISS
11 Dec - 25 Dec	SWISS	direct
08 Dec - 15 Dec	United	direct
08 Dec - 22 Dec	SWISS	direct
15 Dec - 21 Dec	Air Canada
15 Dec - 21 Dec	SWISS	direct
18 Dec - 03 Jan	SWISS
21 Dec - 04 Jan	Air Canada
20 Dec - 04 Jan	Air Canada
28 Dec - 04 Jan	United	direct
19 Dec - 02 Jan	Air Canada
20 Dec - 03 Jan	British Airways
20 Dec - 03 Jan	SWISS	direct
20 Dec - 04 Jan	SWISS	direct
21 Dec - 04 Jan	SWISS	direct

Also check the deals for one-way flights from San Francisco to Zurich in December.

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 December from $623

Return flights