Bandaranaike International Airport (commonly known as Colombo International Airport, Colombo-Bandaranaike and locally as Katunayake Airport) (IATA: CMB, ICAO: VCBI) is the main international airport serving Sri Lanka. It is named after former Prime Minister S.W.R.D. Bandaranaike and is located in a suburb of Negombo, 32.5 kilometres (20 1⁄4 miles) north of the nation's longstanding capital and commercial center, Colombo. It is administered by Airport and Aviation Services (Sri Lanka) Ltd and serves as the hub of SriLankan Airlines, the national carrier of Sri Lanka, and domestic carrier Cinnamon Air. The other airport serving the city of Colombo is the Ratmalana International Airport, primarily serving domestic destinations.