Southern Airways Express flights
The American airline Southern Airways Express operates flights across the country and has a total of 14 hubs, for example in Atlanta, Chicago and Los Angeles. The airline is not a part of any airline alliance, but has interline agreements with the major operators Alaska Airlines, American Airlines and United Airlines.
An airline hub is an airport where the airline has a heavy presence and normally some kind of headquarters. On the other hand, a focus city is a destination where the airline operates limited point-to-point routes. In these cities, the airline doesn’t necessarily need to have an office (even though this sometimes is the case). Many low-cost airlines don't use the definition 'hub' but instead define their main airports of operations as an operating base.
IATA Code: 9X
ICAO Code: FDY