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

Return flights

11 Dec - 18 Dec	Eurowings
02 Dec - 09 Dec	Air France
05 Dec - 11 Dec	Air France
02 Dec - 11 Dec	Air France
15 Dec - 31 Jan	LOT
14 Dec - 12 Jan	Lufthansa
29 Dec - 09 Jan	Finnair
12 Dec - 27 Dec	Air France
24 Dec - 11 Jan	Lufthansa
06 Dec - 01 Jan	Finnair
07 Dec - 01 Jan	Air France
27 Dec - 04 Jan	Finnair
15 Dec - 18 Dec	KLM
18 Dec - 02 Jan	Scandinavian Airlines
21 Dec - 05 Jan	Scandinavian Airlines
19 Dec - 11 Jan	Finnair

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

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 December from 618€

Return flights