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

Return flights

12 Aug - 20 Aug	Ryanair
06 Aug - 16 Aug	Ryanair
06 Aug - 13 Aug	Ryanair	direct
06 Aug - 20 Aug	Ryanair	direct
06 Aug - 27 Aug	Ryanair	direct
13 Aug - 16 Aug	Ryanair
15 Aug - 16 Aug	Ryanair
14 Aug - 16 Aug	Ryanair
27 Aug - 30 Aug	Ryanair	direct
06 Aug - 16 Aug	Ryanair	direct
27 Aug - 17 Sep	Ryanair	direct
27 Aug - 10 Sep	Ryanair	direct
30 Aug - 17 Sep	Ryanair	direct
30 Aug - 06 Sep	Ryanair
20 Aug - 10 Sep	Ryanair	direct
30 Aug - 10 Sep	Ryanair	direct
27 Aug - 03 Sep	Ryanair	direct
30 Aug - 05 Sep	Ryanair
27 Aug - 13 Sep	Ryanair	direct
29 Aug - 05 Sep	Volotea

Also check the deals for one-way flights from Athens to Cologne in August.

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 Cologne in August from $149

Return flights