T'way Air Co., Ltd. — formerly Hansung Airlines — is a South Korean low-cost airline based in Seongsu-dong, Seongdong-gu, Seoul. It operates scheduled domestic, regional and long-haul flights from its two bases at Gimpo and Incheon. From Wikipedia
The group plans to concentrate on T’way Air’s long-haul expansion and corporate restructuring while awaiting antitrust approval for its February acquisition of a 26.77% stake in the airline.