The origin of the airline was the establishment of the BVS Bulgarske Vazdusne Sobsternic in 1947. The first flight took place on 29 June 1947 from Sofia to Burgas. Shortly after the Innlandsroute Sofia Varna, from 2 August 1947. The first international connection was what Sofia-Budapest on 12 August was taken 1947th
After that was established with the assistance and participation of the Soviet Union, a new company called TABSO, this started its flying operations with two Lisunow Li-2 in the autumn of 1948. This was also used Soviet pilots and technicians on the Bulgarian airports.
1954 this airline went completely against the Bulgarian state. The freight business was expanded with the An-12 Antonov Einflotten some. The first machines of this type came from 1963 to the fleet and were taken directly from the manufacturer.