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

Return flights

31 Dec - 09 Jan	Air Serbia
31 Dec - 11 Jan	Air Serbia
31 Dec - 08 Jan	Air Serbia
25 Dec - 07 Jan	Air Serbia
26 Dec - 07 Jan	Air Serbia
28 Dec - 07 Jan	Wizz Air
23 Dec - 31 Dec	Air Serbia
25 Dec - 31 Dec	Air Serbia
26 Dec - 31 Dec	Air Serbia
25 Dec - 25 Jan	Air Serbia
23 Dec - 07 Jan	Air Serbia
23 Dec - 01 Jan	Air Serbia
25 Dec - 01 Jan	Air Serbia
30 Dec - 31 Dec	Wizz Air
29 Dec - 31 Dec	LOT
27 Dec - 31 Dec	Air Serbia
23 Dec - 30 Dec	Air Serbia
25 Dec - 30 Dec	Air Serbia
26 Dec - 30 Dec	SWISS
23 Dec - 29 Dec	Air Serbia

Also check the deals for one-way flights from Athens 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 Athens to Copenhagen in December from 179€

Return flights