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

Return flights

12 Dec - 11 Jan	Spirit Airlines
16 Dec - 23 Dec	Spirit Airlines
27 Dec - 31 Dec	Spirit Airlines
14 Dec - 31 Dec	Spirit Airlines
28 Dec - 24 Jan	Delta
19 Dec - 21 Dec	Alaska Airlines
27 Dec - 31 Dec	Delta	direct
13 Dec - 31 Dec	Delta
14 Dec - 31 Dec	Delta	direct
18 Dec - 01 Jan	Frontier Airlines
12 Dec - 10 Jan	United
13 Dec - 31 Dec	Delta	direct
13 Dec - 16 Dec	Delta	direct
16 Dec - 06 Jan	Delta
12 Dec - 11 Jan	Korean Air	direct
16 Dec - 23 Dec	Korean Air	direct
18 Dec - 01 Jan	Korean Air	direct
17 Dec - 06 Jan	Delta
14 Dec - 05 Jan	Air France
18 Dec - 05 Jan	Delta

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 $1671

Return flights