Which landlocked country in South Asia and one of the region's least populous nations has only four airports?
Yongphulla Airport: Yongphulla Airport (IATA: YON, ICAO: VQTY) (also known as Yonphula Airport) is a domestic airport in Bhutan, one of only four airports in the country. Bhutan: Bhutan ( ; འབྲུག་ཡུལ་ "druk yul "), officially the Kingdom of Bhutan (འབྲུག་རྒྱལ་ཁབ་ "druk gyal khap "), is a landlocked country in South Asia. Bhutan:  Bhutan is geopolitically in South Asia and is the region's second least populous nation after the Maldives.
Bhutan