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

Return flights

31 Dec - 05 Jan	Ryanair
29 Dec - 05 Jan	Wizz Air Malta
31 Dec - 03 Jan	Ryanair
30 Dec - 01 Jan	Ryanair
25 Dec - 30 Dec	Eurowings
27 Dec - 05 Jan	Eurowings
23 Dec - 01 Jan	Ryanair
23 Dec - 29 Dec	Ryanair
28 Dec - 30 Dec	Ryanair
23 Dec - 24 Dec	Ryanair
29 Dec - 03 Jan	Ryanair
25 Dec - 31 Dec	Eurowings
30 Dec - 02 Jan	Ryanair
22 Dec - 28 Dec	Ryanair
31 Dec - 04 Jan	Ryanair
28 Dec - 04 Jan	Ryanair
26 Dec - 27 Dec	Lufthansa
22 Dec - 25 Dec	Eurowings

Also check the deals for one-way flights from Cologne to Oslo 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 Oslo in December from 197€

Return flights