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

Return flights

03 Dec - 24 Dec	Spirit Airlines
06 Dec - 27 Dec	Frontier Airlines
28 Dec - 24 Jan	Spirit Airlines
10 Dec - 24 Dec	Spirit Airlines
10 Dec - 14 Jan	United
24 Dec - 13 Jan	Hawaiian Airlines
03 Dec - 24 Dec	Delta	direct
08 Dec - 23 Dec	Delta	direct
03 Dec - 13 Dec	Delta	direct
16 Dec - 26 Dec	Spirit Airlines
06 Dec - 27 Dec	Delta	direct
06 Dec - 28 Dec	Delta	direct
16 Dec - 23 Dec	Spirit Airlines
13 Dec - 11 Jan	Spirit Airlines
14 Dec - 11 Jan	Spirit Airlines
14 Dec - 16 Jan	United
01 Dec - 05 Jan	Frontier Airlines
13 Dec - 06 Jan	Spirit Airlines
28 Dec - 24 Jan	Delta	direct
15 Dec - 09 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 847€

Return flights