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

Return flights

30 Sep - 07 Oct	Norwegian Air Sweden AOC
17 Sep - 01 Oct	Wizz Air Malta
27 Sep - 01 Oct	Wizz Air
09 Sep - 01 Oct	Wizz Air
23 Sep - 01 Oct	Wizz Air
28 Sep - 01 Oct	Wizz Air Malta
20 Sep - 01 Oct	Wizz Air Malta
20 Sep - 09 Oct	Wizz Air Malta
20 Sep - 08 Oct	Wizz Air Malta
28 Sep - 02 Oct	Wizz Air Malta
17 Sep - 24 Sep	Ryanair
20 Sep - 25 Sep	Wizz Air Malta
17 Sep - 30 Sep	Wizz Air Malta
17 Sep - 23 Sep	Wizz Air Malta
21 Sep - 25 Sep	Wizz Air Malta
27 Sep - 30 Sep	Ryanair
02 Sep - 06 Sep	Wizz Air
27 Sep - 29 Sep	Wizz Air
23 Sep - 30 Sep	Wizz Air
24 Sep - 30 Sep	Ryanair

Also check the deals for one-way flights from Copenhagen to Athens 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 Copenhagen to Athens in September from $136

Return flights