Compañía Boliviana de Transporte Aéreo Privado Aerosur, S.A. (shortened and styled AeroSur) was a privately owned airline from Bolivia, which served as the country's flag carrier since 1998, along with state-owned Boliviana de Aviación. Headquartered in Santa Cruz de la Sierra, it operated a network of domestic and international scheduled passenger flights with its hub at the city's Viru Viru International Airport. As of 2010, the airline had 1200 employees.