AirHint found the following cheapest return flights from Sofia (SOF) to Porto (OPO) in September 2026 (see full year).
Return flights
| 21 Sep - 25 Sep | Wizz Air | ||
| 20 Sep - 24 Sep | Wizz Air | ||
| 08 Sep - 12 Sep | Ryanair | ||
| 13 Sep - 19 Sep | Wizz Air | ||
| 10 Sep - 13 Sep | Air Serbia | ||
| 17 Sep - 20 Sep | Ryanair | ||
| 04 Sep - 09 Sep | Transavia France |
Also check the deals for one-way flights from Sofia to Porto in September.
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