Skywest Airlines Ltd., an investment holding company, engages in the airline operation in Australia and Singapore. The company offers scheduled passenger services within Western Australia and Darwin, in the Northern Territory. It also provides regular and ad hoc charters for organizations with ‘fly-in, fly-out’ requirements. In addition, the company offers air freight solutions; aircraft leasing services; and holiday packages with airfare, accommodation, and car hire combinations. Its fleet includes 8 Fokker 50 turbo-prop aircraft, 11 Fokker 100 jets, 1 Airbus A320, and 8 ATR-72 aircraft. The company serves regional Western Australians; international and domestic tourists; corporate travelers; and fly-in-fly-out mining staff. It has a strategic alliance with Virgin Australia. The company, formerly known as Advent Air Ltd, was founded in 1963 and is based in Singapore. As of April 11, 2013, Skywest Airlines Ltd operates as a subsidiary of Virgin Australia Holdings Limited.