What Terminal is SriLankan Airlines at CMB? SriLankan Airlines operates from Terminal 1 at Bandaranaike International Airport. This terminal handles all international flights and provides a variety of passenger-friendly amenities. Terminal 1 provides a seamless and simple travel experience, with efficient check-in counters and quick security checks, as well as duty-free shopping, dining options, and lounge access. The terminal is designed to promote seamless international travel, with modern facilities, helpful staff, and clear signage.