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

Return flights

28 Dec - 24 Jan	Air Canada
27 Dec - 24 Jan	Air Canada
06 Dec - 20 Dec	Air Canada
05 Dec - 22 Dec	Air Canada
11 Dec - 08 Jan	Air Canada
05 Dec - 22 Dec	Delta	direct
13 Dec - 29 Jan	Spirit Airlines
12 Dec - 08 Jan	Air Canada
28 Dec - 24 Jan	Delta	direct
15 Dec - 08 Jan	Spirit Airlines
29 Dec - 05 Jan	Spirit Airlines
27 Dec - 04 Jan	Air Canada
16 Dec - 07 Jan	Air Canada
22 Dec - 29 Dec	Air France
20 Dec - 31 Dec	Turkish Airlines
06 Dec - 20 Dec	Korean Air	direct
20 Dec - 31 Dec	Korean Air	direct

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 $1048

Return flights