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

Return flights

04 Sep - 09 Sep	Scandinavian Airlines
19 Sep - 30 Sep	Wizz Air Malta
10 Sep - 30 Sep	Wizz Air
03 Sep - 08 Sep	Wizz Air
17 Sep - 23 Sep	Wizz Air
17 Sep - 20 Sep	Wizz Air
04 Sep - 08 Sep	Scandinavian Airlines
19 Sep - 24 Sep	Wizz Air
04 Sep - 10 Sep	Scandinavian Airlines
26 Sep - 29 Sep	Wizz Air Malta
26 Sep - 04 Oct	Wizz Air Malta
02 Sep - 01 Oct	Scandinavian Airlines
25 Sep - 02 Oct	Wizz Air Malta
24 Sep - 01 Oct	Wizz Air
18 Sep - 08 Oct	Wizz Air
28 Sep - 02 Oct	Wizz Air Malta
30 Sep - 06 Oct	Air Serbia
19 Sep - 17 Oct	Wizz Air
30 Sep - 03 Oct	Air Serbia
27 Sep - 01 Oct	Wizz Air

Also check the deals for one-way flights from Athens to Copenhagen in September.

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 September from $159

Return flights