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
03 Dec - 07 Dec	KLM
04 Dec - 07 Dec	KLM
03 Dec - 17 Dec	KLM
14 Dec - 21 Dec	KLM
01 Dec - 31 Dec	easyJet
31 Dec - 09 Jan	Eurowings
12 Dec - 15 Dec	Ryanair
12 Dec - 14 Dec	Eurowings
10 Dec - 13 Dec	Vueling Airlines
15 Dec - 21 Dec	KLM
23 Dec - 01 Jan	easyJet
30 Dec - 08 Jan	Finnair
19 Dec - 01 Jan	Eurowings
24 Dec - 01 Jan	easyJet
31 Dec - 06 Jan	Ryanair
25 Dec - 01 Jan	LOT
31 Dec - 05 Jan	Eurowings
20 Dec - 04 Jan	KLM
31 Dec - 04 Jan	KLM

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 200€

Return flights