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

Return flights

08 Dec - 19 Dec	Turkish Airlines
08 Dec - 19 Dec	Delta	direct
23 Dec - 17 Jan	Delta
18 Dec - 31 Dec	United
10 Dec - 03 Jan	United
20 Dec - 17 Jan	Air France
18 Dec - 05 Jan	Lufthansa
23 Dec - 17 Jan	Korean Air	direct
19 Dec - 31 Dec	Air France
20 Dec - 03 Jan	Air France
20 Dec - 04 Jan	Lufthansa

Also check the deals for one-way flights from Detroit 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 Detroit to Seoul in December from 1059€

Return flights