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

Return flights

05 Aug - 29 Aug	Air Serbia
12 Aug - 19 Aug	Air Serbia
12 Aug - 16 Aug	Air Serbia
06 Aug - 13 Aug	Wizz Air
26 Aug - 03 Sep	Air Serbia
01 Aug - 13 Aug	Air Serbia
05 Aug - 12 Aug	Air Serbia
26 Aug - 01 Sep	Air Serbia
01 Aug - 28 Aug	Air Serbia
07 Aug - 13 Aug	Air Serbia
13 Aug - 26 Aug	LOT
14 Aug - 21 Aug	LOT
08 Aug - 03 Sep	LOT
01 Aug - 01 Sep	Air Serbia
27 Aug - 03 Sep	LOT
29 Aug - 02 Sep	Turkish Airlines
29 Aug - 01 Sep	Turkish Airlines
27 Aug - 13 Sep	LOT
30 Aug - 16 Sep	AJet
30 Aug - 04 Sep	AJet

Also check the deals for one-way flights from Istanbul to Duesseldorf 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 Istanbul to Duesseldorf in August from $183

Return flights