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

Return flights

28 Aug - 01 Sep	Etihad Airways
24 Aug - 08 Sep	Etihad Airways
26 Aug - 05 Sep	Vueling Airlines
26 Aug - 09 Sep	Vueling Airlines
29 Aug - 14 Sep	easyJet
20 Aug - 27 Aug	Eurowings
24 Aug - 05 Sep	Etihad Airways
31 Aug - 09 Sep	easyJet
30 Aug - 12 Sep	easyJet
19 Aug - 27 Aug	Vueling Airlines
18 Aug - 24 Aug	Turkish Airlines
19 Aug - 02 Sep	Ryanair
30 Aug - 03 Sep	Vueling Airlines
19 Aug - 26 Aug	Ryanair
19 Aug - 28 Aug	Vueling Airlines
21 Aug - 24 Aug	Lufthansa
19 Aug - 24 Aug	Ryanair
16 Aug - 30 Aug	Lufthansa

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

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 August from 652€

Return flights