Airlink is an airline from South Africa with two hubs that are located in Johannesburg and Cape Town. This airline operates both domestic and international connections, where the international ones are found in other parts of Africa. Airlink isn’t a part of any global alliance, but codeshares with operators such as United Airlines and Emirates.
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: 4Z
ICAO Code: LNK