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

Return flights

08 Dec - 15 Dec	Lufthansa
02 Dec - 09 Dec	Lufthansa
09 Dec - 16 Dec	Lufthansa
03 Dec - 10 Dec	Lufthansa
07 Dec - 14 Dec	Lufthansa
04 Dec - 11 Dec	Lufthansa
05 Dec - 12 Dec	Lufthansa
31 Dec - 07 Jan	British Airways
14 Dec - 21 Dec	British Airways
30 Dec - 06 Jan	British Airways
12 Dec - 15 Dec	Frontier Airlines
16 Dec - 23 Dec	British Airways
19 Dec - 09 Jan	Spirit Airlines
22 Dec - 04 Jan	Frontier Airlines
29 Dec - 05 Jan	Turkish Airlines
25 Dec - 01 Jan	British Airways
29 Dec - 02 Jan	Turkish Airlines
19 Dec - 09 Jan	Scandinavian Airlines	direct
28 Dec - 04 Jan	Scandinavian Airlines	direct
24 Dec - 04 Jan	Lufthansa

Also check the deals for one-way flights from Atlanta 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 Atlanta to Copenhagen in December from 496€

Return flights