Ranong Airport (IATA: UNN, ICAO: VTSR) is a domestic airport serving Ranong Province in southern Thailand, situated near the Myanmar border and the Andaman Sea coast. It is operated by Airports of Thailand (AOT) and primarily handles regional traffic connecting Ranong to Bangkok. The airport serves a relatively small volume of passengers given Ranong's modest population and its status as one of Thailand's less-visited provinces. Air connectivity has historically been limited, with service dependent on demand from local residents, fishing industry workers, and travelers seeking access to nearby islands and nature reserves. Ranong Province is known for its hot springs, national parks, and proximity to the Kra Isthmus, making the airport a point of access for eco-tourists. The airport's single runway and compact facilities reflect the low traffic volume of the region.