AirHint found the following cheapest return flights from Seoul (ICN) to Sofia (SOF) in April 2026 (see full year).
Return flights
| 02 Apr - 03 May | Lufthansa | ||
| 08 Apr - 23 Apr | LOT | ||
| 03 Apr - 30 Apr | Air France | ||
| 14 Apr - 17 Apr | LOT | ||
| 28 Apr - 03 May | Lufthansa | ||
| 13 Apr - 22 Apr | Emirates | ||
| 28 Apr - 02 May | Lufthansa |
Also check the deals for one-way flights from Seoul to Sofia in April.
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