Table 6. Top 10 U.S. Airports ranked by October 2006 System* Scheduled Enplanements,,,, "Passenger numbers in millions (000,000)",,,, October 2006 Rank,Airport,October 2006 Enplaned Passengers,October 2005 Rank,October 2005 Enplaned Passengers 1,Atlanta,3.4,1,3.3 2,Chicago O'Hare ,3.0,2,3.0 3,Dallas - Fort Worth,2.3,3,2.3 4,Denver ,1.9,7,1.7 5,Los Angeles International ,1.9,4,1.8 6,Las Vegas,1.8,5,1.8 7,Phoenix,1.7,6,1.7 8,Houston Bush,1.6,8,1.5 9,Detroit Metro ,1.5,10,1.4 10,Minneapolis - St Paul,1.4,9,1.4 "Source: Bureau of Transportation Statistics, T-100 Market",,,, * System equals domestic plus international,,,, Note: Percentage changes based on numbers prior to rounding.,,,,