RKJY - Yeosu Airport. Our 4th destination in Korea, Yeosu Airport is an airport in Yeosu, South Korea (IATA: RSU, ICAO: RKJY). The city of Yeosu consists of the Yeosu peninsula as well as 365 islands (48 inhabited, 317 uninhabited). Being midway along the southern coast of South Korea, it is flanked by Namhae County in South Gyeongsang Province to the east with a natural waterway, and the Bay of Suncheon to the west and northwest, the city of Suncheon sprawling along its banks.RKJY - Yeosu Airport. Our 4th destination in Korea, Yeosu Airport is an airport in Yeosu, South Korea (IATA: RSU, ICAO: RKJY). The city of Yeosu consists of the Yeosu peninsula as well as 365 islands (48 inhabited, 317 uninhabited). Being midway along the southern coast of South Korea, it is flanked by Namhae County in South Gyeongsang Province to the east with a natural waterway, and the Bay of Suncheon to the west and northwest, the city of Suncheon sprawling along its banks.