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

Return flights

18 Mar - 25 Mar	Spirit Airlines
12 Mar - 19 Mar	Frontier Airlines
16 Mar - 23 Mar	Spirit Airlines
15 Mar - 22 Mar	Spirit Airlines
13 Mar - 20 Mar	Spirit Airlines
13 Mar - 29 Mar	Air Canada
12 Mar - 19 Mar	Delta	direct
16 Mar - 23 Mar	Delta	direct
18 Mar - 25 Mar	Delta	direct
13 Mar - 20 Mar	Delta	direct
27 Mar - 03 Apr	Delta	direct

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

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 March from $1004

Return flights