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

Return flights

23 Sep - 06 Oct	Pegasus Airlines
27 Sep - 04 Oct	AJet
23 Sep - 30 Sep	Pegasus Airlines
24 Sep - 10 Oct	AJet
16 Sep - 30 Sep	AJet
16 Sep - 01 Oct	AJet
22 Sep - 08 Oct	AJet
15 Sep - 08 Oct	Pegasus Airlines
13 Sep - 27 Sep	AJet
21 Sep - 07 Oct	AJet
13 Sep - 17 Sep	AJet
21 Sep - 30 Sep	AJet
18 Sep - 21 Sep	Etihad Airways
08 Sep - 23 Sep	AJet
08 Sep - 09 Oct	AJet
08 Sep - 21 Sep	Etihad Airways
08 Sep - 15 Sep	Etihad Airways
09 Sep - 20 Sep	Etihad Airways
14 Sep - 08 Oct	AJet
20 Sep - 13 Oct	AJet

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Duesseldorf to Bangkok in September from $646

Return flights