Air Busan Co., Ltd., operating as Air Busan is a low-cost airline based in Busanjin-gu, Busan, South Korea. It is a subsidiary of Asiana Airlines. The airline began its operation in 2007 as Busan International Airlines Company ; it launched service in October 2008. Air Busan is South Korea's third-largest low-cost airline, carrying 4.5 million domestic and 3.6 million international passengers in 2018. Air Busan has grown international passenger traffic by 122% over the past three years, while domestic traffic has grown by 38%.