AirHint found the following cheapest return flights from Oslo (OSL) to Seoul (ICN) in April 2026 (see full year).
Return flights
| 18 Apr - 27 Apr | Turkish Airlines | ||
| 14 Apr - 28 Apr | Turkish Airlines | ||
| 07 Apr - 25 Apr | Finnair | ||
| 11 Apr - 15 Apr | Finnair |
Also check the deals for one-way flights from Oslo to Seoul in April.
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