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

Return flights

02 Dec - 15 Dec	Ryanair
08 Dec - 15 Dec	Ryanair
15 Dec - 23 Dec	Ryanair
01 Dec - 05 Dec	Ryanair
15 Dec - 21 Dec	Ryanair
04 Dec - 07 Dec	Ryanair
20 Dec - 28 Dec	Ryanair
21 Dec - 28 Dec	Ryanair
15 Dec - 19 Dec	Ryanair
30 Dec - 07 Jan	Ryanair
27 Dec - 01 Jan	Ryanair
20 Dec - 23 Dec	Ryanair
29 Dec - 02 Jan	Ryanair
29 Dec - 04 Jan	Ryanair
27 Dec - 03 Jan	Ryanair

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

Cheap car rent in Keflavik

Cheapest return flights from Cologne to Keflavik in December from 271€

Return flights