A documentary dedicated to the 75th anniversary of Sofia Airport, celebrated in 2012. As a part of the rapid progress of aviation in the 20-ies and 30-ies of XX century, Bulgaria was one of the first countries to sign the founding of civil aviation Chicago Convention. In the early 30-ies of XX century flights have been performed by the natural slope near Sofia, whose terrain is set with decree of Tsar Boris III of 16 September 1937, to develop a civilian airport . This is the birthday of Sofia Airport.