In the airline industry, a focus city is an airport that is important to one airline but is not a hub. An airline has daily flights from the Focus city to many destinations that are also not its hubs. Even though the word "city" is part of this term, it means a city's airport, not the city.
An example of an airline's focus city is US Airways (now part of American Airlines) at Washington National Airport in Arlington, Virginia.[1] Focus city airports can have some of the same facilities that hubs have. For example, the airline may repair or clean their aircraft at a focus city because it is cheaper. They might also have places and equipment to handle cargo.
Many low-cost carriers that mostly fly point-to-point use focus cities more than hubs. Southwest Airlines,[2] Spirit Airlines, JetBlue Airways, Allegiant Air[3] and WestJet in the Americas, and Ryanair, EasyJet, Norwegian Air Shuttle and Wizz Air in Europe are examples.