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

Return flights

25 Aug - 28 Aug	Scandinavian Airlines
28 Aug - 02 Sep	easyJet
24 Aug - 02 Sep	Eurowings
29 Aug - 03 Sep	Scandinavian Airlines
14 Aug - 19 Aug	Scandinavian Airlines
28 Aug - 03 Sep	easyJet
31 Aug - 05 Sep	easyJet
29 Aug - 02 Sep	Eurowings
22 Aug - 01 Sep	easyJet
27 Aug - 03 Sep	Eurowings
31 Aug - 07 Sep	easyJet
25 Aug - 30 Aug	Ryanair
28 Aug - 11 Sep	easyJet
06 Aug - 10 Aug	Scandinavian Airlines
19 Aug - 26 Aug	Scandinavian Airlines
01 Aug - 04 Aug	Ryanair
26 Aug - 31 Aug	Scandinavian Airlines
26 Aug - 26 Aug	Eurowings
14 Aug - 17 Aug	Scandinavian Airlines
27 Aug - 31 Aug	Eurowings

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

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 August from $239

Return flights