AirHint found the following cheapest return flights from Detroit (DTW) to Seoul (ICN) in April 2026 (see full year).
Return flights
| 10 Apr - 26 Apr | Alaska Airlines | ||
| 02 Apr - 19 Apr | Delta | ||
| 03 Apr - 19 Apr | Hawaiian Airlines | ||
| 10 Apr - 26 Apr | Delta | direct | |
| 11 Apr - 19 Apr | Turkish Airlines |
Also check the deals for one-way flights from Detroit to Seoul in April.
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