Sandakan Airport (IATA: SDK, ICAO: WBKS) is a domestic airport serving Sandakan, the second-largest city in the Malaysian state of Sabah on the island of Borneo. It provides essential air connectivity for residents and tourists visiting the region's renowned wildlife sanctuaries, including the Sepilok Orangutan Rehabilitation Centre and Turtle Islands Park. The airport primarily handles domestic routes connecting Sandakan to Kota Kinabalu and Kuala Lumpur, operated by Malaysian carriers. It serves as an important access point for ecotourism in eastern Sabah, supporting conservation-focused travel to some of Borneo's most biodiverse habitats. The facility is managed under Malaysia Airports Holdings Berhad (MAHB) and operates a modest single-terminal building suited to its regional traffic volume. Infrastructure upgrades have been undertaken over the years to accommodate growing passenger numbers driven by tourism demand.