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SUM Air plans air travel to remote South Korean islands using turboprop aircraft.
Founded in 2022 and based in Seoul, South Korea, SUM Air is an aviation company and MAAF subsidiary focused on connecting travelers with islands including Ulleungdo, Heuksando, and Baengnyeongdo. It plans to use short-runway turboprop aircraft. In October 2025, it raised an undisclosed amount of venture funding from Muirwoods Ventures to pursue certification and acquire a second aircraft.
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