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

Return flights

28 Apr - 12 May	Turkish Airlines
25 Apr - 23 May	Turkish Airlines
18 Apr - 16 May	Turkish Airlines
11 Apr - 17 Apr	Spirit Airlines
30 Apr - 21 May	United
09 Apr - 26 Apr	Turkish Airlines
08 Apr - 18 Apr	Turkish Airlines
08 Apr - 26 Apr	Air Canada
07 Apr - 19 May	Delta	direct
28 Apr - 12 May	Delta	direct
23 Apr - 06 May	Delta	direct
08 Apr - 26 Apr	Delta	direct
09 Apr - 26 Apr	Delta	direct
08 Apr - 18 Apr	Delta	direct
25 Apr - 23 May	Delta	direct
18 Apr - 16 May	Delta	direct
11 Apr - 17 Apr	Delta	direct

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

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 April from $884

Return flights