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

Return flights

01 Dec - 15 Dec	Scandinavian Airlines	direct
30 Dec - 13 Jan	Lufthansa
03 Dec - 17 Dec	Lufthansa
03 Dec - 18 Dec	TAP
02 Dec - 16 Dec	British Airways
01 Dec - 02 Dec	British Airways
02 Dec - 03 Dec	British Airways
04 Dec - 19 Dec	SWISS
05 Dec - 19 Dec	SWISS
14 Dec - 21 Dec	United
25 Dec - 05 Jan	Air Canada
23 Dec - 01 Jan	United
06 Dec - 20 Dec	SWISS
24 Dec - 04 Jan	Lufthansa
26 Dec - 04 Jan	TAP
20 Dec - 01 Jan	Air Canada
25 Dec - 03 Jan	Air Canada
20 Dec - 01 Jan	Scandinavian Airlines	direct
25 Dec - 05 Jan	Scandinavian Airlines	direct
25 Dec - 03 Jan	Scandinavian Airlines	direct

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 $479

Return flights