High Quality Content by WIKIPEDIA articles! The Airport & East Hills Railway Line, in Sydney, Australia, connects the Sydney Central Business District with Glenfield and then Campbelltown via Sydney Airport and East Hills. Part of Sydney`s CityRail network, the line is made up of two separate lines, the East Hills Line, originally constructed in 1931, and the Airport Line (or Airport Link) (opened in 2000), as well as a portion of the Main South Line between Glenfield and Campbelltown; although since the opening of the Airport Line, the two lines have operated essentially as a single line. Operationally, however, the lines are quite different, with the Airport Line stations being operated by a private company, the Airport Link Company, as part of a public private partnership (PPP). This gives them the right to charge a surcharge on top of the normal fare.