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

Return flights

24 Dec - 27 Dec	Lufthansa
17 Dec - 24 Dec	Lufthansa
30 Dec - 06 Jan	SWISS
31 Dec - 07 Jan	SWISS
25 Dec - 01 Jan	KLM
23 Dec - 30 Dec	Lufthansa
21 Dec - 28 Dec	United
26 Dec - 01 Jan	SWISS
19 Dec - 09 Jan	Hawaiian Airlines
18 Dec - 25 Dec	Lufthansa
28 Dec - 03 Jan	SWISS
18 Dec - 25 Dec	Scandinavian Airlines	direct
25 Dec - 01 Jan	Scandinavian Airlines	direct
26 Dec - 01 Jan	Scandinavian Airlines	direct
26 Dec - 02 Jan	SWISS
19 Dec - 26 Dec	Scandinavian Airlines	direct
21 Dec - 28 Dec	Scandinavian Airlines	direct
22 Dec - 29 Dec	Lufthansa
20 Dec - 27 Dec	Scandinavian Airlines	direct
29 Dec - 05 Jan	British Airways

Also check the deals for one-way flights from San Francisco to Copenhagen 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 Copenhagen in December from 623€

Return flights