AirHint found the following cheapest one-way flights from Lisbon (LIS) to Sofia (SOF) in September 2026 (see full year).
One-Way flights
| 23 Sep | Ryanair | ||
| 16 Sep | Air Europa | ||
| 17 Sep | Ryanair | ||
| 09 Sep | TAP | ||
| 26 Sep | Air Europa | ||
| 21 Sep | Iberia | ||
| 19 Sep | Iberia | ||
| 30 Sep | Ryanair | ||
| 06 Sep | easyJet | ||
| 12 Sep | Iberia |
Also check the deals for return flights from Lisbon to Sofia in September.
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