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

Return flights

13 Jan - 20 Jan	Frontier Airlines
16 Jan - 23 Jan	Frontier Airlines
28 Jan - 04 Feb	Spirit Airlines
19 Jan - 23 Jan	Spirit Airlines
06 Jan - 21 Jan	Frontier Airlines
20 Jan - 31 Jan	Turkish Airlines
04 Jan - 26 Jan	Spirit Airlines
13 Jan - 31 Jan	Turkish Airlines
01 Jan - 22 Jan	Alaska Airlines
06 Jan - 13 Jan	Hawaiian Airlines
13 Jan - 20 Jan	Delta	direct
28 Jan - 04 Feb	Delta	direct
07 Jan - 05 Feb	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 787€

Return flights