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

Return flights

09 Sep - 19 Sep	easyJet
08 Sep - 22 Sep	Eurowings
08 Sep - 19 Sep	easyJet
09 Sep - 23 Sep	easyJet
10 Sep - 17 Sep	Eurowings
12 Sep - 23 Sep	easyJet
08 Sep - 14 Sep	easyJet
16 Sep - 22 Sep	easyJet
07 Sep - 22 Sep	Etihad Airways
14 Sep - 22 Sep	Etihad Airways
21 Sep - 09 Oct	Etihad Airways
23 Sep - 15 Oct	Etihad Airways
24 Sep - 22 Oct	Air France
15 Sep - 15 Oct	Etihad Airways
29 Sep - 14 Oct	KLM
29 Sep - 08 Oct	KLM
15 Sep - 31 Oct	Etihad Airways
19 Sep - 12 Oct	Ryanair
06 Sep - 12 Oct	Etihad Airways
27 Sep - 12 Oct	LOT

Also check the deals for one-way flights from Duesseldorf to Seoul 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 Seoul

Cheap car rent in Seoul

Cheapest return flights from Duesseldorf to Seoul in September from 582€

Return flights