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

Return flights

02 Jul - 09 Jul	Ryanair	direct
02 Jul - 16 Jul	Ryanair	direct
03 Jul - 08 Jul	Eurowings	direct
02 Jul - 08 Jul	Ryanair	direct
09 Jul - 23 Jul	Ryanair	direct
02 Jul - 12 Jul	Ryanair	direct
02 Jul - 03 Jul	Ryanair
03 Jul - 12 Jul	Eurowings	direct
09 Jul - 16 Jul	Ryanair	direct
02 Jul - 04 Jul	Ryanair	direct
30 Jul - 06 Aug	Ryanair
30 Jul - 13 Aug	Ryanair
30 Jul - 06 Aug	Ryanair	direct
02 Jul - 01 Aug	TUIfly
23 Jul - 06 Aug	easyJet
16 Jul - 01 Aug	easyJet
22 Jul - 04 Aug	easyJet
20 Jul - 27 Aug	easyJet
16 Jul - 20 Aug	Ryanair	direct
22 Jul - 06 Aug	easyJet

Also check the deals for one-way flights from Duesseldorf to Kos in July.

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 July from $83

Return flights