AirHint found the following cheapest one-way flights from Lisbon (LIS) to Sofia (SOF) in September 2026 (see full year).
One-Way flights
| 16 Sep | Ryanair | ||
| 21 Sep | Air Europa | ||
| 22 Sep | TAP | ||
| 02 Sep | Ryanair | ||
| 01 Sep | TAP | ||
| 02 Sep | Bulgaria Air | direct | |
| 16 Sep | Bulgaria Air | direct | |
| 21 Sep | Bulgaria Air | direct | |
| 23 Sep | SKY express |
Also check the deals for return flights from Lisbon to Sofia in September.
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