Kota Kinabalu International Airport — Kota Kinabalu, Malaysia

Kota Kinabalu International Airport, known by the code BKI, sits just 10 feet above sea level on the coast of Sabah in Malaysian Borneo. Serving as Sabah's principal gateway by air, BKI ranks among Malaysia's busiest airports, historically counted as the second-busiest in the country behind Kuala Lumpur. Despite that traffic volume, a single runway here handles both domestic routes across Borneo and international flights connecting to destinations throughout Asia. Its low-lying coastal location places it close to the South China Sea, with the city of Kota Kinabalu and its waterfront just a short distance away. The airport serves as a launching point for travelers heading to Sabah's rainforests, dive sites, and Mount Kinabalu, making it a key hub for both business and eco-tourism traffic into Borneo. Large passenger volumes moving through a single runway make efficient scheduling essential at BKI, and the terminal has expanded over the years to keep pace with demand from carriers linking Borneo to the rest of Southeast Asia.