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

Return flights

10 Dec - 15 Dec	easyJet
01 Dec - 31 Dec	KLM
08 Dec - 11 Dec	KLM
15 Dec - 21 Dec	KLM
04 Dec - 08 Dec	KLM
01 Dec - 07 Dec	KLM
07 Dec - 23 Dec	Scandinavian Airlines
09 Dec - 12 Dec	easyJet
15 Dec - 22 Dec	easyJet
06 Dec - 15 Dec	easyJet
31 Dec - 05 Jan	KLM
23 Dec - 01 Jan	Eurowings
31 Dec - 04 Jan	LOT
27 Dec - 01 Jan	LOT
30 Dec - 01 Jan	Eurowings
28 Dec - 05 Jan	Finnair
23 Dec - 02 Jan	Scandinavian Airlines
20 Dec - 04 Jan	LOT
30 Dec - 04 Jan	Scandinavian Airlines
23 Dec - 03 Jan	Scandinavian Airlines

Also check the deals for one-way flights from Duesseldorf 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 Duesseldorf to Keflavik in December from $239

Return flights