Bandaranaike International Colombo Airport public transport guide

Sri Lanka Transport Board is the state-owned national bus operator running the express bus service linking Bandaranaike International Airport with central Colombo via the Colombo-Katunayake Expressway. As the country's primary public bus provider, SLTB operates scheduled routes nationwide from its Colombo head office, giving travelers a low-cost alternative to taxis and private transfers for reaching the airport.

Sri Lanka Railways is the national state railway operator, running commuter trains on the Puttalam Line that call at Airport - Katunayake station, a short walk or tuk-tuk ride from the terminal. As the country's sole rail operator, it also runs coastal, hill country and northern lines, offering an alternative to road transport for reaching Colombo from the airport.