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

Return flights

03 Dec - 10 Dec	Lufthansa
05 Dec - 12 Dec	Lufthansa
04 Dec - 11 Dec	Lufthansa
02 Dec - 09 Dec	Lufthansa
09 Dec - 16 Dec	Lufthansa
10 Dec - 17 Dec	Lufthansa
06 Dec - 13 Dec	British Airways
07 Dec - 14 Dec	Lufthansa
08 Dec - 15 Dec	British Airways
31 Dec - 07 Jan	British Airways
30 Dec - 06 Jan	British Airways
11 Dec - 18 Dec	British Airways
24 Dec - 02 Jan	Frontier Airlines
17 Dec - 02 Jan	WestJet
25 Dec - 01 Jan	Lufthansa
26 Dec - 02 Jan	Lufthansa
28 Dec - 04 Jan	Lufthansa
29 Dec - 05 Jan	British Airways
27 Dec - 03 Jan	British Airways

Also check the deals for one-way flights from San Diego 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 Diego to Copenhagen in December from 461€

Return flights