United Airlines Holdings (formerly known as United Continental Holdings) is an airline holding company that primarily operates through its wholly-owned subsidiary United Airlines.
Frontier Airlines (also known as Frontier Group Holdings) is an airline company that provides passengers with group, charter, and cargo transportation services.
Singapore Airlines is a global company dedicated to providing air transportation services of the highest quality and to maximising returns for the benefit of its shareholders and employees.
Bristow Group (formerly known as Era Group) is a provider of helicopter transportation to oil and gas customers, search and rescue, and aircraft support solutions to government and civil organizations.