AirHint found the following cheapest return flights from Florence (FLR) to Sofia (SOF) in September 2025 (see full year).
Return flights
| 19 Sep - 23 Sep | Austrian Airlines | ||
| 10 Sep - 12 Sep | ITA Airways | ||
| 15 Sep - 19 Sep | Volotea | ||
| 09 Sep - 11 Sep | ITA Airways | ||
| 25 Sep - 28 Sep | ITA Airways |
Also check the deals for one-way flights from Florence to Sofia in September.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
Find us on social media