- Sondok Airport, also known as Wonsan International Airport, is an airport located in Wonsan, Kangwon Province, North Korea. It is one of the few international airports in the country and serves as the main gateway to the eastern region of North Korea. The airport has both domestic and international flights, with destinations including Beijing, Shanghai, Vladivostok, and Pyongyang. Sondok Airport features a single terminal building and offers various facilities for travelers, including customs and immigration services, duty-free shops, and a restaurant.