Low cost carrier Citilink started its operation in 2001 and has its base in Jakarta, Indonesia. The airline has three hubs that are found at Jakarta–Soekarno-Hatta, Jakarta–Halim Perdanakusuma and Surabaya. Citilink first and foremost offers connections to different parts of Asia. They are not a part of any worldwide airline alliance.
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: QG
ICAO Code: CTV