Currently there are no direct flights Sofia to Kazakhstan.

Flights Sofia to Kazakhstan with 1 stopover:

Flights via London Heathrow (LHR), London, United Kingdom
From Sofia (SOF), Bulgaria with British Airways Transfer at London Heathrow (LHR) Then on to Alma Ata Airport (ALA), Almaty, Kazakhstan with British Mediterranean Airways
OR
Then on to Alma Ata Airport (ALA), Almaty, Kazakhstan with British 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 Adler/Sochi Airport (AER), Adler/Sochi, Kazakhstan with Aeroflot