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

Return flights

31 Dec - 07 Jan	Ryanair
12 Dec - 18 Dec	Ryanair
11 Dec - 13 Dec	Ryanair
11 Dec - 18 Dec	Ryanair
12 Dec - 20 Dec	Ryanair
12 Dec - 19 Dec	Ryanair
06 Dec - 11 Dec	Ryanair
05 Dec - 12 Dec	Ryanair
15 Dec - 18 Dec	Ryanair
05 Dec - 11 Dec	Ryanair
02 Dec - 06 Dec	Pegasus Airlines
18 Dec - 10 Jan	Ryanair
18 Dec - 09 Jan	Ryanair
19 Dec - 07 Jan	Ryanair
18 Dec - 01 Jan	Ryanair
27 Dec - 09 Jan	Wizz Air Malta
21 Dec - 07 Jan	Ryanair
21 Dec - 08 Jan	Ryanair
18 Dec - 06 Jan	Ryanair
21 Dec - 13 Jan	Ryanair

Also check the deals for one-way flights from Cologne to Athens 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 Cologne to Athens in December from $118

Return flights