The international airline Iberia is the flag carrier of Spain with its main hub at Barajas Airport in Madrid. Iberia offers connections to North America, South America and Africa, while the majority of their connections are found in Europe. The airline has been on the market since the 1920’s and in 1999 they also joined the worldwide airline alliance Oneworld.
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: IB
ICAO Code: IBE