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

Return flights

16 Oct - 20 Oct	Scandinavian Airlines
08 Oct - 15 Oct	Scandinavian Airlines
08 Oct - 13 Oct	Scandinavian Airlines
07 Oct - 13 Oct	Scandinavian Airlines
23 Oct - 26 Oct	Scandinavian Airlines
06 Oct - 13 Oct	Norwegian
16 Oct - 23 Oct	Scandinavian Airlines
09 Oct - 14 Oct	easyJet
09 Oct - 17 Oct	Scandinavian Airlines
12 Oct - 20 Oct	easyJet
31 Oct - 02 Nov	easyJet
13 Oct - 03 Nov	LOT

Also check the deals for one-way flights from Duesseldorf to Keflavik in October.

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 October from 198€

Return flights