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

Return flights

30 Jan - 19 Feb	Spirit Airlines
05 Jan - 05 Feb	Spirit Airlines
08 Jan - 27 Jan	Air Canada
12 Jan - 19 Jan	Delta	direct
14 Jan - 21 Jan	Delta	direct
30 Jan - 19 Feb	Delta	direct
08 Jan - 27 Jan	Delta	direct
07 Jan - 05 Feb	Delta	direct
08 Jan - 15 Jan	Delta	direct
05 Jan - 05 Feb	Delta	direct
02 Jan - 09 Jan	United
09 Jan - 16 Jan	Delta	direct
02 Jan - 04 Jan	KLM

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 912€

Return flights