AirHint found the following cheapest return flights from Detroit (DTW) to Seoul (ICN) in April 2026 (see full year).
Return flights
| 06 Apr - 14 Apr | Air Canada | ||
| 23 Apr - 04 May | Delta | direct | |
| 13 Apr - 26 Apr | Delta | direct | |
| 15 Apr - 26 Apr | Delta | direct | |
| 22 Apr - 03 May | Delta | direct | |
| 06 Apr - 14 Apr | Delta | direct |
Also check the deals for one-way flights from Detroit to Seoul in April.
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