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

Return flights

07 Dec - 23 Dec	Spirit Airlines
08 Dec - 23 Dec	Spirit Airlines
10 Dec - 16 Dec	Turkish Airlines
09 Dec - 27 Dec	Air Canada
11 Dec - 19 Jan	Air Canada
08 Dec - 23 Dec	Delta	direct
10 Dec - 23 Dec	Delta	direct
09 Dec - 27 Dec	Delta	direct
04 Dec - 20 Dec	Delta
29 Dec - 10 Jan	Spirit Airlines
06 Dec - 28 Dec	Delta	direct
14 Dec - 16 Jan	United
07 Dec - 23 Dec	Korean Air	direct
16 Dec - 07 Jan	Spirit Airlines
12 Dec - 10 Jan	United
16 Dec - 20 Jan	United
28 Dec - 24 Jan	Delta	direct
11 Dec - 19 Jan	Delta	direct
17 Dec - 20 Jan	United
19 Dec - 05 Jan	Spirit Airlines

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 $906

Return flights