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

Return flights

23 Sep - 30 Oct	Pegasus Airlines
17 Sep - 27 Oct	AJet
21 Sep - 27 Oct	Pegasus Airlines
22 Sep - 07 Oct	Pegasus Airlines
21 Sep - 20 Oct	Pegasus Airlines
26 Sep - 12 Oct	Pegasus Airlines
10 Sep - 11 Oct	AJet
27 Sep - 13 Oct	Pegasus Airlines
28 Sep - 13 Oct	Pegasus Airlines
15 Sep - 30 Sep	Pegasus Airlines
15 Sep - 23 Sep	AJet
26 Sep - 10 Oct	Pegasus Airlines
14 Sep - 22 Sep	Pegasus Airlines
10 Sep - 17 Sep	AJet
15 Sep - 27 Sep	Pegasus Airlines
13 Sep - 23 Sep	AJet
21 Sep - 25 Sep	Pegasus Airlines
13 Sep - 27 Sep	AJet
15 Sep - 17 Sep	Pegasus Airlines
10 Sep - 29 Sep	AJet

Also check the deals for one-way flights from Duesseldorf to Hanoi 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 Hanoi in September from $695

Return flights