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

Return flights

20 Aug - 27 Aug	Ryanair	direct
20 Aug - 03 Sep	Ryanair	direct
06 Aug - 13 Aug	Ryanair	direct
27 Aug - 03 Sep	Ryanair	direct
20 Aug - 30 Aug	Ryanair	direct
28 Aug - 10 Sep	Eurowings
13 Aug - 27 Aug	Ryanair	direct
25 Aug - 01 Sep	Eurowings	direct
27 Aug - 04 Sep	Ryanair	direct
21 Aug - 31 Aug	Condor	direct
21 Aug - 30 Aug	Eurowings	direct
25 Aug - 30 Aug	Eurowings	direct
23 Aug - 01 Sep	easyJet
26 Aug - 03 Sep	Eurowings
22 Aug - 01 Sep	Ryanair
18 Aug - 27 Aug	Ryanair
24 Aug - 30 Aug	easyJet
30 Aug - 03 Sep	easyJet
19 Aug - 30 Aug	Eurowings
28 Aug - 04 Sep	Condor	direct

Also check the deals for one-way flights from Duesseldorf to Kos 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 Kos in August from 96€

Return flights