The only Bulgarian charter route shown in the printed version of the BRS winter timetable is the Saturday Sofia for Balkan Holidays. As with last winter the carrier is Enter Air. In 2011-2012 and 2012-2013 BH Air operated the flight and up to and including 2011-2012 Thomson operated a second weekly flight to Sofia for First Choice, Thomson, Crystal and Neilson Holidays. These companies no longer appear to offer Bulgarian ski holidays from BRS, although Crystal (part of TUI of course) and Inghams certainly do for most of the other ski destinations from the airport.i think I'm correct in saying the flight to Bulgaria with bh air is not listed. is that flight not operational this year,they were advertised as operating.
There are fewer tour companies offering ski holidays from BRS than was the case several years ago. I suspect that a number of the smaller companies may no longer exist.
Until about nine years ago there was also a weekly ski charter flight to Plovdiv in Bulgaria but that didn't last for many winters.
Furthermore, Wizz Air now operates a 2 x weekly scheduled Sofia route and in the ski season some winter sports enthusiasts may well use it.