Currently there are no direct flights Sofia to Japan.

Flights Sofia to Japan 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 Metropolitan Area (TYO), Tokyo, Japan with Virgin Atlantic Airlines
OR
Then on to Narita (NRT), Tokyo, Japan with British Airways
OR
Then on to Metropolitan Area (TYO), Tokyo, Japan with Japan Airlines
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 Narita (NRT), Tokyo, Japan with Aeroflot