Volaris is the second largest airline in Mexico after Aeroméxico. The low cost carrier has three hubs in Guadalajara, Mexico City and Tijuana. The majority of the flights under their flag are domestic ones, even if they also have some connections to other airports in the Americas. Volaris isn’t a member in any global airline alliance, but codeshare with a number of 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: Y4
ICAO Code: VOI