AirHint found the following cheapest return flights from Detroit (DTW) to Seoul (ICN) in January 2026 (see full year).

Return flights

14 Jan - 28 Jan	Frontier Airlines
15 Jan - 16 Feb	Spirit Airlines
29 Jan - 15 Feb	Spirit Airlines
29 Jan - 12 Feb	Spirit Airlines
29 Jan - 13 Feb	Spirit Airlines
29 Jan - 14 Feb	Spirit Airlines
17 Jan - 25 Jan	Turkish Airlines
13 Jan - 23 Jan	Turkish Airlines
05 Jan - 14 Jan	Spirit Airlines
15 Jan - 16 Feb	Delta	direct
28 Jan - 04 Feb	Delta	direct
13 Jan - 03 Feb	Delta	direct
29 Jan - 12 Feb	Delta	direct
07 Jan - 14 Jan	United
09 Jan - 25 Jan	Turkish Airlines
03 Jan - 24 Jan	Spirit Airlines
13 Jan - 23 Jan	Delta	direct
29 Jan - 13 Feb	Delta	direct
17 Jan - 25 Jan	Delta	direct
09 Jan - 25 Jan	Delta	direct

Also check the deals for one-way flights from Detroit to Seoul in January.

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 January from 723€

Return flights