Southern Air Inc., a subsidiary of Atlas Air Worldwide Holdings, is a global air cargo carrier headquartered in Florence, Kentucky. It is a certified U.S. FAA part 121 supplemental cargo carrier and is currently only one of two U.S. based cargo airlines operating the 777F. Southern Air is also the first company to provide ACMI (Aircraft, Crew, Maintenance, Insurance) service for the wide-body Boeing 777F.

The airline operates an all-Boeing fleet of aircraft: Boeing 777F, and the Boeing 737-400SF. Its wide range of services include: long-term ACMI solutions, on-demand commercial charters, as well as Department of Defense Civil Reserve Air Fleet. Southern Air’s operations also support some of the world’s largest combination carriers as well as government agencies and non-government organizations.

The airline was established on 5 March 1999 by James Neff, out of the assets of Southern Air Transport and started operations in November 1999.

On September 7, 2007, Oak Hill Capital Partners acquired majority ownership of Southern Air and merged Cargo 360 into the airline. The company currently has approximately 750 employees.

In February and March 2010, Southern Air took delivery of two Boeing 777 freighters. At the same time, reflecting the change in direction provided by fresh corporate leadership, Southern Air introduced new aircraft livery as well as new corporate branding.

In early 2011, Southern Air entered into a multiple year contract with DHL Aviation; by utilizing the 777's fuel efficiencies, long range and cargo capabilities, Southern Air was able to augment DHL's overnight express package delivery service through hubs in Cincinnati, Bahrain, Hong Kong and Anchorage, increasing package delivery options provided by DHL to its customers.

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