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

Return flights

01 Dec - 12 Dec	Frontier Airlines
01 Dec - 10 Dec	Spirit Airlines
10 Dec - 14 Jan	United
12 Dec - 21 Dec	Spirit Airlines
12 Dec - 19 Dec	United
10 Dec - 12 Jan	United
01 Dec - 10 Dec	Delta	direct
08 Dec - 23 Dec	Delta	direct
07 Dec - 23 Dec	Delta
14 Dec - 16 Jan	United
01 Dec - 12 Dec	Delta	direct
04 Dec - 20 Dec	Delta	direct
12 Dec - 31 Dec	United
12 Dec - 09 Jan	United
15 Dec - 09 Jan	Frontier Airlines
15 Dec - 08 Jan	United
28 Dec - 24 Jan	Delta
12 Dec - 05 Jan	Spirit Airlines
06 Dec - 02 Jan	Spirit Airlines
15 Dec - 10 Jan	Air France

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 827€

Return flights