Sun-Air (EZ, Billund) posted a net loss in 2023 because of legal expenses linked to a lawsuit against the carrier's long-time engine MRO provider, Jet Support Services, Inc. (JSSI).

The airline recorded a loss of DKK22.6 million krone (USD3.3 million) for calendar 2023, a result Chairman Neils Sundberg says he is not satisfied with. However, he says the lawsuit against JSSI has had a major impact on Sun-Air's finances.

"At the same time, it is important to emphasize that we continue to have a solid economy, which is absolutely crucial for the group's continued development," he said.

Sun-Air's stoush with JSSS dates back to early 2022 when, according to Sun-Air, a longstanding maintenance contract between the two parties, became unfavourable to JSSI. Sun-Air said JSSI began looking for a way to reduce and/or eliminate its obligations, including imposing non-contracted incremental costs, which Sun-Air refused to pay, causing JSSS to terminate the contract, and the airline to sue for more than USD30 million in damages and costs. The matter remains unresolved in the Illinois Northern District Court.

Sun-Air operates scheduled flights as a franchise partner of British Airways (BA, London Heathrow). It also operates ad hoc charters under the JoinJet (JNJ, Billund) brand, and has an MRO facility at Billund and Thisted called Sun-Air Technic that it makes available to third-parties. According to the ch-aviation fleets module, Sun-Air operates a single Do228-100 and eleven 328-300s. In partnership with British Airways, the airline's scheduled flights link Billund with Manchester International, London City, Düsseldorf, and Gothenburg Landvetter.