AirHint found the following cheapest one-way flights from Karlsruhe/Baden-Baden (FKB) to Sofia (SOF) in September 2025 (see full year).
One-Way flights
| 30 Sep | Ryanair | direct | |
| 23 Sep | Ryanair | direct | |
| 09 Sep | Ryanair | direct | |
| 26 Sep | Ryanair | direct | |
| 12 Sep | Ryanair | direct | |
| 01 Sep | Ryanair | ||
| 29 Sep | Ryanair | ||
| 28 Sep | Ryanair | ||
| 04 Sep | Ryanair | ||
| 22 Sep | Ryanair |
Also check the deals for return flights from Karlsruhe/Baden-Baden 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.
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