SUM Air () is a South Korean regional airline based in Gangseo District, Seoul, South Korea.
In February 2025 the airline received an air carrier licence from Ministry of Land, Infrastructure and Transport. The airline will operate ATR 72-600s one leased from Avation. As of January 2026, the airline has taken delivery of its first ATR 72, registered HL5264. It will operate two more ATRs.
Destinations SUM Air currently operates services to and from China and Japan. +CountryCityAirportNotesRefsChinaQingdaoQingdao Jiaodong International AirportWeihaiWeihai Dashuipo International AirportYantaiYantai Penglai International AirportJapanKitakyushuKitakyushu AirportKumamotoKumamoto AirportMiyazakiMiyazaki AirportTsushimaTsushima AirportSouth KoreaBusanGimhae International Airport DaeguDaegu International Airport GunsanGunsan Airport GwangjuGwangju Airport Jeju Jeju International Airport MuanMuan International Airport PohangPohang Gyeongju Airport SacheonSacheon Airport SeoulGimpo International AirportIncheon International AirportUlsanUlsan Airport YangyangYangyang International Airport YeosuYeosu Airport
Fleet , SUM Air operates the following aircraft: AircraftIn serviceOrdersPassengersNotesATR 72-6001672Deliveries from December 2025.Order with 4 purchase rights.Total16
Branding identity The SUM Air logo features a triangular symbol representing an island and the sea horizon. The surrounding outline symbolizes movement and connections between destinations. The name “SUM” is derived from the Korean word for “island”.
See also List of ATR 72 operators List of airlines of South Korea
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