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

Return flights

24 Sep - 15 Oct	Eurowings
08 Sep - 16 Sep	easyJet
08 Sep - 14 Sep	easyJet
09 Sep - 17 Sep	Eurowings
03 Sep - 17 Sep	Eurowings
10 Sep - 17 Sep	Eurowings
01 Sep - 17 Sep	easyJet
04 Sep - 17 Sep	easyJet
08 Sep - 24 Sep	Air France
22 Sep - 28 Sep	Eurowings
15 Sep - 23 Sep	Eurowings
21 Sep - 12 Oct	LOT
01 Sep - 01 Oct	easyJet
01 Sep - 08 Oct	LOT
25 Sep - 16 Oct	Etihad Airways
30 Sep - 09 Oct	Etihad Airways
19 Sep - 12 Oct	Eurowings
26 Sep - 11 Oct	Turkish Airlines
22 Sep - 06 Oct	Lufthansa
18 Sep - 02 Oct	Eurowings

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 $651

Return flights