AirHint found the following cheapest return flights from Duesseldorf (DUS) to Bangkok (BKK) in September 2025 (see full year).

Return flights

20 Sep - 30 Oct	AJet
22 Sep - 30 Oct	AJet
29 Sep - 30 Oct	Pegasus Airlines
17 Sep - 26 Oct	Pegasus Airlines
27 Sep - 30 Oct	AJet
29 Sep - 26 Oct	AJet
26 Sep - 29 Oct	AJet
23 Sep - 28 Oct	Pegasus Airlines
25 Sep - 23 Oct	AJet
29 Sep - 27 Oct	Pegasus Airlines
15 Sep - 22 Sep	AJet
17 Sep - 24 Sep	AJet
26 Sep - 30 Sep	Pegasus Airlines
14 Sep - 21 Sep	Etihad Airways
22 Sep - 29 Sep	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
20 Sep - 27 Sep	AJet
04 Sep - 11 Sep	Pegasus Airlines
19 Sep - 26 Sep	ITA Airways
10 Sep - 17 Sep	ITA Airways

Also check the deals for one-way flights from Duesseldorf to Bangkok in September.

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 Bangkok in September from $476

Return flights