Table 1: Scheduled System (Domestic and International) Airline Travel on U.S. Airlines,,,,,, ,Monthly,,,Year-to-Date,, ,May-08,May-09,Change %,2008,2009,Change % Passengers (in millions),65.9,59.7,-9.3,311.4,281.9,-9.5 Flights (in thousands),889.5,812.7,-8.6,"4,330.8","3,927.0",-9.3 Revenue Passenger Miles (in billions),71.7,65.0,-9.4,337.1,304.6,-9.6 Available Seat-Miles (in billions),88.6,81.6,-7.9,430.0,394.1,-8.3 Load Factor*,80.9,79.7,-1.2,78.4,77.3,-1.1 Flight Stage Length**,718.7,716.0,-0.4,719.8,718.5,-0.2 Passenger Trip Length***,"1,088.4","1,088.3",0.0,"1,082.5","1,080.7",-0.2 "Source: Bureau of Transportation Statistics, T-100 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.,,,,,, ,,,,,,