With 0 stops and a cost of C$ 219 per ticket, flying from Chennai to Colombo Bandaranaike Intl is the cheapest round-trip international flight with SriLankan Airlines. The cheapest international one-way flight with SriLankan Airlines is: - Mumbai Chhatrapati Shivaji Intl to Dhaka Hazrat Shahjalal Intl - C$ 95 per ticket - 1 stop