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

Return flights

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

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Cheapest return flights from Duesseldorf to Keflavik in December from $220

Return flights