Između ostalih, to su Austrian Airlines, mađarski Malev, grčke Olympic Airlines, srbijanski JAT, italijanska Alitalia, slovenska Adria Airways, Turkish Airlines, British Airways i bugarski Hemus Air.
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.