AirHint found the following cheapest return flights from Frankfurt (FRA) to Sofia (SOF) in August 2026 (see full year).
Return flights
| 23 Aug - 10 Sep | Lufthansa | direct | |
| 08 Aug - 13 Aug | Air Serbia | ||
| 06 Aug - 11 Aug | Lufthansa | direct | |
| 01 Aug - 07 Aug | Air Serbia |
Also check the deals for one-way flights from Frankfurt to Sofia in August.
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