Currently there are no direct flights Sofia to Sierra Leone.

Flights Sofia to Sierra Leone 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 Freetown Mammy Yoko Heliport (JMY), Freetown [Manny Yoko Airport], Sierra Leone with British Mediterranean Airways
OR
Then on to Hastings Airport (HGS), Freetown, Sierra Leone with British Mediterranean Airways