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

Return flights

07 Dec - 13 Dec	Ryanair
13 Dec - 18 Dec	Ryanair
04 Dec - 06 Dec	Ryanair
05 Dec - 06 Dec	Ryanair
01 Dec - 05 Dec	Ryanair
12 Dec - 13 Dec	Ryanair
07 Dec - 08 Dec	Ryanair
06 Dec - 08 Dec	Ryanair
04 Dec - 08 Dec	Pegasus Airlines
03 Dec - 11 Dec	Pegasus Airlines
15 Dec - 09 Jan	Pegasus Airlines
20 Dec - 07 Jan	Ryanair
29 Dec - 15 Jan	Pegasus Airlines
18 Dec - 04 Jan	Eurowings
19 Dec - 09 Jan	Ryanair
30 Dec - 07 Jan	Pegasus Airlines
19 Dec - 10 Jan	Ryanair
18 Dec - 03 Jan	Eurowings
19 Dec - 04 Jan	Ryanair
20 Dec - 06 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 122€

Return flights