Table 6. Top 10 U.S. Airports ranked by May 2006 System* Scheduled Enplanements,,,,, "Passenger numbers in millions (000,000)",,,,, May 2006 Rank,Airport,May 2006 Enplaned Passengers,May 2005 Rank,May 2005 Enplaned Passengers, ,,,,, 1,Atlanta Hartsfield-Jackson,3.5,1,3.8, 2,Chicago O'Hare ,3,2,3, 3,Dallas-Fort Worth ,2.5,3,2.4, 4,Denver ,2,7,1.7, 5,Los Angeles International ,1.9,4,1.9, 6,Las Vegas McCarran,1.8,5,1.8, 7,Phoenix Sky Harbor,1.8,6,1.8, 8,Houston Bush Intercontinental,1.7,8,1.6, 9,Orlando ,1.4,11,1.4, 10,Detroit Metro Wayne County,1.4,9,1.5, "Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, Note: Percentage changes based on numbers prior to rounding.,,,,