Kosrae International Airport — Okat, Micronesia

Kosrae, the smallest and easternmost of the four states making up the Federated States of Micronesia, is reached through KSA, an island whose lush volcanic peaks and fringing coral reefs draw a modest but devoted stream of divers and snorkelers. For years the airport was best known as one stop on the famous island-hopper route linking Guam to Honolulu, a single flight touching down at several remote Micronesian airstrips in succession, including Kosrae, before continuing east across the Pacific. That itinerary made KSA a rare, fleeting gateway for travelers curious about a part of the ocean that otherwise sees little commercial air traffic. Kosrae itself avoided the large-scale tourism development seen elsewhere in the Pacific, leaving its rainforest interior, mangrove channels, and archaeological ruins at Lelu relatively undisturbed. The airport's short runway and limited facilities mirror the island's small resident population, and flight frequency remains low compared to almost any other airport carrying international status.