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

Return flights

20 Aug - 03 Sep	Ryanair	direct
20 Aug - 27 Aug	Ryanair	direct
27 Aug - 10 Sep	Ryanair	direct
13 Aug - 27 Aug	Ryanair	direct
26 Aug - 04 Sep	Eurowings
20 Aug - 30 Aug	Eurowings
17 Aug - 27 Aug	Eurowings	direct
20 Aug - 29 Aug	Ryanair
24 Aug - 31 Aug	Ryanair
13 Aug - 20 Aug	Ryanair	direct
21 Aug - 28 Aug	Eurowings
17 Aug - 26 Aug	Condor	direct
24 Aug - 31 Aug	Condor	direct
20 Aug - 10 Sep	Ryanair
20 Aug - 08 Sep	Ryanair
27 Aug - 08 Sep	Ryanair
27 Aug - 15 Sep	Ryanair
20 Aug - 13 Sep	Eurowings
16 Aug - 06 Sep	Ryanair
20 Aug - 13 Sep	TUIfly	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.

Book a cheap hotel in Kos

Cheap car rent in Kos

Cheapest return flights from Duesseldorf to Kos in August from $125

Return flights