Airport index for Bulgaria 
Last updated: 22 October 2011
A list of airports that were either departure or destination airports for the accident / hijacked flights in the Aviation Safety Network database:
Bourgas Airport (BOJ/LBBG)Gorna Orechovitsa Airport (GOZ/LBGO)
Kozlovets
Sofia-Vrazhdebna Airport (SOF/LBSF)
Varna Airport (VAR/LBWN)
Vidin Airport (VID)