Colombo Bandaranaike Airport also known as Bandaranaike International Airport (BIA) (also known as Katunayake International Airport, Negombo International Airport and Colombo International Airport) (IATA: CMB, ICAO: VCBI) is one of the two international airports serving the city of Colombo, the other is Ratmalana Airport. Mattala Rajapaksa International Airport located in southern city of Hambantota is the other international airport in Sri Lanka. Bandaranaike International Airport is located in Katunayake, 22 miles (35 km) north of Colombo. It is administered by Airport and Aviation Services (Sri Lanka) Ltd. It is the hub of SriLankan Airlines, the national carrier of Sri Lanka, and Mihin Lanka, the budget airline of Sri Lanka.

The Colombo Bandaranaike airport is undergoing resurfacing of its runway. Future projects may include a second runway to support the Airbus A380, a further eight passenger gates, a domestic terminal, a five-storey car-park, and a five-star hotel neighbouring the airport. New approach channels to the airport the construction of terminal will begin in January 2014, and expected to be completed by December 2015.

The Colombo Bandaranaike International Airport has a single runway (04/22) with an asphalt surface. The take-off and landing distances are 3,441 m and 3,350 m respectively. In addition, the government has decided to invest on a second runway at the Colombo airport, enabling even the large A380s to land in Colombo. Financial assistance for this purpose is expected from Japan. A senior official told Ceylon Today that discussions are underway to shut down BIA during off-peak hours in 2014 to overlay the new runway at the BIA.