AirHint found the following cheapest return flights from Sofia (SOF) to Seoul (ICN) in April 2026 (see full year).
Return flights
| 01 Apr - 06 Apr | LOT | ||
| 16 Apr - 26 Apr | LOT | ||
| 08 Apr - 20 Apr | Air Serbia | ||
| 06 Apr - 19 Apr | Turkish Airlines | ||
| 23 Apr - 03 May | Turkish Airlines |
Also check the deals for one-way flights from Sofia to Seoul in April.
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