The United States possesses the largest, most extensive aviation system in the world, accounting for approximately forty percent of all commercial aviation and fifty percent of all general aviation in the world. The system contains over 19,800 airports including over 5,100 airports open to the public with 522 airports providing commercial service.
It is important to note that most U.S. airports are owned and operated by state or local government entities or authorities. Questions about specific airports should be directed to that airport; most airports maintain public websites with detailed information.
ATA and its member airlines are actively engaged in many airport-related activities, including the development and funding for airport operations and capital improvements.
This section includes a primer on airports and related airport activities.