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

Return flights

31 Dec - 05 Jan	Ryanair
08 Dec - 13 Dec	Ryanair
04 Dec - 06 Dec	Ryanair
05 Dec - 06 Dec	Ryanair
01 Dec - 04 Dec	Ryanair
08 Dec - 14 Dec	Ryanair
03 Dec - 10 Dec	Pegasus Airlines
13 Dec - 18 Dec	Eurowings
15 Dec - 18 Dec	Ryanair
08 Dec - 10 Dec	Ryanair
05 Dec - 07 Dec	Ryanair
26 Dec - 14 Jan	Lufthansa
27 Dec - 15 Jan	Lufthansa
30 Dec - 05 Jan	Ryanair
27 Dec - 04 Jan	Lufthansa
26 Dec - 02 Jan	Lufthansa
31 Dec - 04 Jan	Ryanair
22 Dec - 02 Jan	Lufthansa
31 Dec - 01 Jan	Ryanair
23 Dec - 03 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.

Book a cheap hotel in Copenhagen

Cheap car rent in Copenhagen

Cheapest return flights from Cologne to Copenhagen in December from 151€

Return flights