Table 7: Domestic Scheduled Airline Travel on U.S. Airlines,,,,,, ,Monthly,,,Previous Calendar Years,, ,May-08,May-09,Change %,2008,2008,Change % Passengers (in millions),57.9,52.9,-8.6,273.0,247.2,-9.4 Flights (in thousands),816.0,747.0,-8.5,"3,967.3","3,589.1",-9.5 Revenue Passenger Miles (in billions),50.2,46.0,-8.4,238.0,214.8,-9.7 Available Seat-Miles (in billions),61.7,56.5,-8.4,302.8,273.0,-9.8 Load Factor*,81.4,81.4,0.0,78.6,78.7,0.1 Flight Stage Length**,622.4,616.1,-1.0,627.1,619.3,-1.3 Passenger Trip Length***,866.6,868.5,0.2,871.9,869.2,-0.3 "Source: Bureau of Transportation Statistics, T-100 Domestic Market and Segment",,,,,, *Change in load factor points,,,,,, **The average non-stop distance flown per departure in miles,,,,,, *** The average distance flown per passenger in miles,,,,,, Note: Percent changes based on numbers prior to rounding.,,,,,, ,,,,,,