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

Return flights

08 Dec - 12 Dec	easyJet
07 Dec - 12 Dec	easyJet
10 Dec - 12 Dec	easyJet
13 Dec - 17 Dec	easyJet
14 Dec - 16 Dec	easyJet
14 Dec - 17 Dec	easyJet
15 Dec - 22 Dec	easyJet
08 Dec - 22 Dec	easyJet
31 Dec - 05 Jan	KLM
12 Dec - 14 Dec	easyJet
06 Dec - 14 Dec	easyJet
26 Dec - 02 Jan	easyJet
28 Dec - 04 Jan	KLM
27 Dec - 04 Jan	LOT
26 Dec - 04 Jan	Ryanair
26 Dec - 05 Jan	easyJet
27 Dec - 03 Jan	Scandinavian Airlines
29 Dec - 03 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 $192

Return flights