AirHint found the following cheapest one-way flights from Frankfurt (FRA) to Sofia (SOF) in December 2025 (see full year).
One-Way flights
| 28 Dec | Ryanair | direct | |
| 29 Dec | Ryanair | direct | |
| 31 Dec | easyJet | ||
| 23 Dec | Ryanair | ||
| 30 Dec | Ryanair | ||
| 26 Dec | Wizz Air Malta | ||
| 26 Dec | Ryanair | direct | |
| 31 Dec | Lufthansa | direct | |
| 25 Dec | LOT | ||
| 24 Dec | easyJet |
Also check the deals for return flights from Frankfurt to Sofia in December.
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