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

Return flights

02 Dec - 09 Dec	Lufthansa
03 Dec - 10 Dec	Lufthansa
08 Dec - 15 Dec	Scandinavian Airlines	direct
09 Dec - 16 Dec	Lufthansa
01 Dec - 15 Dec	Delta
04 Dec - 11 Dec	Lufthansa
05 Dec - 12 Dec	Lufthansa
07 Dec - 14 Dec	Lufthansa
06 Dec - 13 Dec	Lufthansa
12 Dec - 15 Dec	Spirit Airlines
30 Dec - 06 Jan	British Airways
31 Dec - 07 Jan	British Airways
26 Dec - 17 Jan	Scandinavian Airlines	direct
17 Dec - 10 Jan	Frontier Airlines
12 Dec - 12 Jan	Delta
29 Dec - 05 Jan	British Airways
24 Dec - 04 Jan	Lufthansa
27 Dec - 03 Jan	British Airways

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 507€

Return flights