The New York/New Jersey/Philadelphia airspace is being "redesigned" incrementally, with completion estimated in 2012. The Bush Administration announced plans to auction some takeoff and landing slots at the New York airports, but plans were canceled by the Obama administration. Longer-term solutions include increasing capacity by building more runways, and implementing the Next Generation Air Transportation System which would allow more direct flight paths. The California High-Speed Rail project has been justified among other things as a ways to decrease congestion and thereby delays on the busy San Francisco Bay Area - Metro Los Angeles air corridor. Network statistics Airports: 14,951 (2008 est.) Airports with paved runways: Total: 5,146 Over 10,000 ft: (3,048 m): 190 8,000 ft (2,438 m) to 10,000 ft (3,048 m): 227 5,000 ft (1,524 m) to 8,000 ft (2,438 m): 1,464 3,000 ft (914 m) to 5,000 ft (1,524 m): 2,307 under 3,000 ft (914 m): 958 (1999 est.) Airports with unpaved runways: Total: 9,805 8,000 ft (2,438 m) to 10,000 ft (3,048 m): 6 5,000 ft (1,524 m) to 8,000 ft (2,438 m): 156 3,000 ft (914 m) to 5,000 ft (1,524 m): 1,734 Under 3,000 ft (914 m): 7,909 (1999 est.) Heliports: 146 (CIA, 2007 est.) See also Federal Aviation Administration – The national aviation authority of the United States National Airspace System — Air traffic control Next Generation Air Transportation System Space-A travel – A system for military-related people to travel free on military flights Footnotes Further reading M. Houston Johnson V, Taking Flight: The Foundations of American Commercial Aviation, 1918-1938. College Station, TX: Texas A&M University Press, 2019. External links U.S. Department of Transportation (DOT) NASA graphic map of air travel in US, including top view, side view, and 9/11/2001–6 minute graphic Air Tickets booking in USA Aeromexico Flights Aviation in the United States