In early 2004, Hemus Hold LTD won a tender and became the owner of the avio-technical base of the Sofia Airport. At the end of the same year (2004) the merger of Hemus Hold and Hemus Air into Bulgarian Airways Group JSC was done and the company gained control over the airway entity.

In early 2007, Bulgarian Airways Group JSC won the tender for the privatization of the National Airways Bulgaria Air JSC.

The company also participates in Lufthansa Technik Sofia LTD. In 2011 Bulgarian Airways Group JSC expanded its cooperation with Lufthansa Technik Sofia LTD by the increase of the hangar base, respectively the capacity, for the servicing of the Boeing and Airbus aircrafts.