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

Return flights

29 Aug - 22 Sep	Ryanair
28 Aug - 03 Sep	Ryanair
19 Aug - 21 Aug	Ryanair
18 Aug - 21 Aug	Ryanair
17 Aug - 21 Aug	Ryanair
25 Aug - 27 Aug	Ryanair
28 Aug - 30 Aug	Lufthansa
28 Aug - 31 Aug	Lufthansa
19 Aug - 22 Aug	Ryanair
25 Aug - 29 Aug	Ryanair
16 Aug - 20 Aug	Condor
18 Aug - 29 Aug	Lufthansa
25 Aug - 01 Sep	Eurowings

Also check the deals for one-way flights from Cologne to Copenhagen 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.

Book a cheap hotel in Copenhagen

Cheap car rent in Copenhagen

Cheapest return flights from Cologne to Copenhagen in August from $175

Return flights