Jeju Air (7C, Jeju) resumed its domestic route between Seoul Incheon and Jeju on May 12, 2026, after the Jeju province, a major airline shareholder, requested South Korea's Ministry of Land, Infrastructure, and Transport to reinstate the historically unprofitable service.

The LCC suspended the route in October 2016 due to weak demand. The airline operates the service 2x weekly aboard a B737-800, targeting foreign tourist demand and improving local travel convenience. It is currently the only airline connecting Incheon with Jeju, as other airlines (and Jeju Air) serve the island from Seoul Gimpo.