Table 6. Top 10 U.S. Airports ranked by December 2006 System* Scheduled Enplanements,,,,,, "Passenger numbers in millions (000,000)",,,,,, December 2006 Rank,Airport,December 2006 Enplaned Passengers,December 2005 Rank,December 2005 Enplaned Passengers,, 1,Atlanta,3.4,1,3.3,, 2,Chicago O'Hare,2.7,2,2.8,, 3,Dallas-Fort Worth ,2.3,3,2.3,, 4,Los Angeles International ,2.0,4,1.9,, 5,Houston Bush,1.7,7,1.6,, 6,Las Vegas,1.7,8,1.6,, 7,Phoenix,1.6,6,1.7,, 8,Denver ,1.6,5,1.7,, 9,Detroit Metro,1.4,10,1.4,, 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.,,,,,,