"Table 4. Top 10 U.S. Airlines, ranked by April 2008 System* Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000)",,,,, Apr 2008 Rank,Carrier,Apr 2008 Enplaned Passengers,Apr 2007 Rank,Apr 2007 Enplaned Passengers,Pct. Change 2007-2008 1,Southwest,8.794,1,8.435,4.3 2,American,7.546,2,8.202,-8.0 3,Delta,5.909,3,6.154,-4.0 4,United,5.416,4,5.903,-8.2 5,US Airways**,4.748,7,3.290,44.3 6,Northwest,4.242,5,4.589,-7.6 7,Continental,4.089,6,4.217,-3.0 8,AirTran,1.986,8,1.997,-0.5 9,JetBlue,1.931,9,1.933,-0.1 10,SkyWest,1.742,10,1.793,-2.9 "Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, ** US Airways April 2008 number is the report of the merged US Airways and America West. The April 2007 numbers were reported separately by US Airways and America West. America West reported 1.782 million system passengers in April 2007.,,,,, Note: Percent changes based on numbers prior to rounding.,,,,,