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Eastar Jet (ESR) (Korean: 이스타 항공; RR: Iseuta Hanggong) is a South Korean low-cost airline with its headquarters in Banghwa-dong, Gangseo-gu, Seoul. On January 7, 2009, Eastar Jet made its maiden flight from Gimpo International Airport to Jeju International Airport. Now, the airline operates a scheduled passenger network to 14 destinations in eight countries. Its main base is Gimpo International Airport, with a hub at Jeju International Airport.