The airline was established and started operations in 1978. It initially operated solely as an air taxi and charter service, but developed into a regional airline in 1987. It became a British Airways franchisee on 1 August 1996, operating as British Airways. Sun Air is an affiliate member of the Oneworld alliance. The airline is wholly owned by Niels Sundberg and has 175 employees. It has an executive aviation operation called JoinJet.