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

Return flights

21 Oct - 28 Oct	easyJet
29 Oct - 12 Nov	Eurowings
29 Oct - 05 Nov	Eurowings
27 Oct - 10 Nov	Eurowings
21 Oct - 29 Oct	Eurowings
19 Oct - 23 Oct	Ryanair
27 Oct - 07 Nov	Eurowings
29 Oct - 13 Nov	Eurowings
23 Oct - 30 Oct	Austrian Airlines
20 Oct - 24 Oct	easyJet
08 Oct - 18 Oct	AJet
24 Oct - 07 Nov	Eurowings
01 Oct - 12 Oct	KLM
20 Oct - 03 Nov	Eurowings
25 Oct - 30 Oct	Eurowings
20 Oct - 02 Nov	Eurowings
20 Oct - 30 Oct	Eurowings
28 Oct - 02 Nov	Eurowings
22 Oct - 30 Oct	Turkish Airlines
25 Oct - 08 Nov	Eurowings

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

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 Seoul in October from $687

Return flights