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

Return flights

01 Oct - 17 Oct	KLM
22 Oct - 05 Nov	LOT
26 Oct - 12 Nov	LOT
25 Oct - 12 Nov	LOT
01 Oct - 16 Oct	KLM
02 Oct - 16 Oct	Air France
22 Oct - 29 Oct	LOT
02 Oct - 25 Oct	LOT
31 Oct - 09 Nov	Finnair
20 Oct - 27 Oct	Lufthansa
01 Oct - 08 Oct	LOT
31 Oct - 07 Nov	Finnair
29 Oct - 11 Nov	Finnair
31 Oct - 08 Nov	Finnair
30 Oct - 09 Nov	Finnair
25 Oct - 01 Nov	LOT
02 Oct - 24 Oct	Lufthansa
03 Oct - 18 Oct	Lufthansa
02 Oct - 18 Oct	Lufthansa
25 Oct - 14 Nov	LOT

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 658€

Return flights