Belair was only founded after Swissair failed. Balair was formerly 99% owned by the SAirGroup (Swissair parent) and was operating two B767-300ERs on longhaul charter flights and two B757-200s on behalf of Hotelplan, a Swiss tour operator. When Swissair was grounded in October 2001, Balair also stopped operations. Hotelplan which was basically paying the leasing rates for its B757-200s anyway, was obviously well prepared for this case and took over Balair, renamed it into Belair within days. They added a B767-300ER to the two B757-200s later on.
Edelweiss Air is operating three A320-200s and a single A330-200 and is a subsidiary of tour operator Kuoni.
Kuoni and Hotelplan signed some kind of a cooperation agreement several months ago to jointly market their charter capacities mainly on longhaul routes because there was a lot of overcapacity in the Swiss charter market.
As both airlines are 100% owned by the tour operators, they do not publish any financial results for the airlines only but only for the group in total. It is not the purpose of those two airlines but to bring travellers to their holiday resorts cheaper and offering a better service than the tour operators would get it from competitors.
Swiss Sun, the charter division of Swiss International Air Lines, is the third player in the market, they operate two A320-200s and three MD
-83s at the moment.