These include Austrian Airlines, Hungary's Malev, Greece's Olympic Airlines, Serbia's JAT, Italy's Alitalia, Slovenia's Adria Airways, Turkish Airlines, British Airways and Bulgaria's Hemus Air.
Među njima su Austrian Airlines, mađarski Malev, grčki Olympic Airlines, srbijanski JAT, talijanska Alitalia, slovenska Adria Airways, Turkish Airlines, British Airways i bugarski Hemus Air.