Currently there are no direct flights Sofia to Slovenia.

Flights Sofia to Slovenia with 1 stopover:

Flights via Ataturk (IST), Istanbul, Turkey
From Sofia (SOF), Bulgaria with Aerosvit Transfer at Ataturk (IST), Istanbul, Turkey Then on to Ljubljana (LJU), Ljubljana, Slovenia with Adria Airways
Flights via Moscow Sheremetievo (SVO), Moscow, Russia
From Sofia (SOF), Bulgaria with Aeroflot
OR
From Sofia (SOF), Bulgaria with Aerosvit
Transfer at Moscow Sheremetievo (SVO), Moscow, Russia Then on to Ljubljana (LJU), Ljubljana, Slovenia with Aeroflot
OR
Then on to Ljubljana (LJU), Ljubljana, Slovenia with Adria Airways