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

Return flights

18 Sep - 24 Sep	Etihad Airways
16 Sep - 24 Sep	Etihad Airways
02 Sep - 24 Sep	Air France
10 Sep - 25 Sep	Air France
02 Sep - 29 Sep	Air France
09 Sep - 18 Sep	KLM
10 Sep - 05 Oct	Air France
15 Sep - 22 Sep	Etihad Airways
16 Sep - 29 Sep	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
11 Sep - 17 Sep	Etihad Airways
15 Sep - 02 Oct	KLM
17 Sep - 17 Oct	Air France
15 Sep - 07 Oct	KLM
17 Sep - 08 Oct	Air France
01 Sep - 21 Oct	Air France
01 Sep - 01 Oct	Air France
13 Sep - 05 Oct	Air France
15 Sep - 15 Oct	Eurowings
12 Sep - 05 Oct	Air France

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 553€

Return flights