Table 6. Top 10 U.S. Airports ranked by April 2006 System* Enplanements,,,,, "Passenger numbers in millions (000,000)",,,,, Apr. 2006 Rank,Airport,Apr. 2006 Enplaned Passengers,Apr. 2005 Rank,Apr. 2005 Enplaned Passengers, ,,,,, 1,Hartsfield-Jackson Atlanta,3.4,1,3.6, 2,Chicago O'Hare,2.8,2,2.8, 3,Dallas-Ft. Worth,2.4,3,2.2, 4,Los Angeles Int'l,1.9,4,1.8, 5,Denver,1.8,7,1.6, 6,Phoenix Sky Harbor,1.8,6,1.7, 7,Las Vegas McCarran,1.7,5,1.7, 8,Houston Bush Intercontinental ,1.7,8,1.5, 9,Orlando,1.5,11,1.4, 10,Detroit Metro Wayne County,1.5,9,1.5, " Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, Note: Percentage changes based on numbers prior to rounding.,,,,,