Sun-Air's maintenance division largely focuses on performing extensive aircraft overhauls, commonly replacing elements such as the landing gear, composite materials, wheels and brakes.

[7] In accordance with this branding, Sun-Air's scheduled flights are operated with British Airways logos being prominently displayed in their corporate design.

[5] Part of the reason Sun-Air had agreed to become a franchisee was to gain a strategic partner, particularly one that would be able and willing to assist in its growth and the acquisition of larger aircraft.

As a step towards this, and to help it handle increasing passenger traffic on its routes between Denmark and Britain, it acquired a pair of second-hand British Aerospace ATPs in late 1997.

[5] Focusing largely on business jet operations, JoinJet taken steps to build an individual identity, including the adoption of a unique livery and distinct logo.

[5] According to Sun-Air, the company has traditionally placed an emphasis on providing passengers with a comprehensive service; as such, all scheduled flights have included provisions for meals, drinks, and luggage as default since 2009.

[5] Sun Air is an affiliate member of the Oneworld alliance and also uses British Airways' frequent-flyer program Executive Club.