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

Return flights

06 Dec - 13 Dec	Ryanair
10 Dec - 13 Dec	Ryanair
20 Dec - 25 Dec	Ryanair
06 Dec - 12 Dec	Ryanair
13 Dec - 15 Dec	Ryanair
05 Dec - 06 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
05 Dec - 12 Dec	Ryanair
04 Dec - 07 Dec	Ryanair
05 Dec - 07 Dec	Ryanair
30 Dec - 02 Jan	Lufthansa
29 Dec - 02 Jan	Lufthansa
30 Dec - 03 Jan	Lufthansa
27 Dec - 01 Jan	Lufthansa
19 Dec - 03 Jan	Lufthansa
21 Dec - 04 Jan	Lufthansa
31 Dec - 02 Jan	Ryanair

Also check the deals for one-way flights from Cologne to Copenhagen 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 Copenhagen in December from 131€

Return flights