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

Return flights

25 Apr - 10 May	Alaska Airlines
05 Apr - 12 Apr	Spirit Airlines
23 Apr - 04 May	Spirit Airlines
01 Apr - 15 Apr	Spirit Airlines
05 Apr - 11 Apr	Spirit Airlines
11 Apr - 02 May	Turkish Airlines
29 Apr - 27 May	Alaska Airlines
16 Apr - 27 Apr	Delta	direct
01 Apr - 15 Apr	Delta	direct
30 Apr - 21 May	Delta	direct
29 Apr - 27 May	Delta	direct
23 Apr - 04 May	Delta	direct
07 Apr - 26 May	Delta	direct
23 Apr - 06 May	Delta	direct
03 Apr - 18 Apr	Delta	direct
25 Apr - 10 May	Delta	direct
05 Apr - 12 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 845€

Return flights