Private jets fly out of both major international airports and smaller, dedicated "General Aviation" airports. However, most private travelers prefer smaller regional airports because they are closer to city centers and allow passengers to bypass the chaos of large commercial terminals. For example, in New York, private jets often use Teterboro (TEB) instead of JFK, and in London, they favor Farnborough (FAB) or Northolt (NHT) over Heathrow. Regardless of the airport size, private jets operate out of a "Fixed Base Operator" or FBO. An FBO is essentially a private terminal with its own lounge, security, and customs processing, allowing travelers to arrive just 15 minutes before takeoff. Because private jets can land on much shorter runways than commercial airliners, they have access to over 5,000 airports in the US alone, compared to the roughly 500 served by commercial airlines.