AirHint found the following cheapest return flights from Florence (FLR) to Sofia (SOF) in December 2025 (see full year).
Return flights
| 11 Dec - 15 Dec | Lufthansa | ||
| 29 Dec - 02 Jan | Air Serbia | ||
| 22 Dec - 24 Dec | ITA Airways | ||
| 18 Dec - 21 Dec | ITA Airways | ||
| 22 Dec - 05 Jan | ITA Airways | ||
| 21 Dec - 03 Jan | ITA Airways |
Also check the deals for one-way flights from Florence to Sofia in December.
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