Table D-3 Scheduled and Actual Travel Time for the Top City Pairs: 1990 and 2004,,,, Minutes,,,, ,Average Scheduled Time per Flight,,Average Actual Time per Flight, ,1990,2004,1990,2004 All City Pairs,110.1,132.5,117.1,139.5 ,,,, Top 10 City Pairs,115.9,126.6,123.6,134.4 Non Top 10 City Pairs,109.8,132.8,116.7,139.8 ,,,, Top 20 City Pairs,117.5,127.3,125.3,135.4 Non Top 20 City Pairs,109.5,133.0,116.3,139.9 ,,,, Top 50 City Pairs,121.1,131.8,129.2,140.0 Non Top 50 City Pairs,108.5,132.6,115.3,139.4 NOTE: Any city pair that was in the top 50 for any year from 1990 to 2004 is included. Only carriers reporting Airline Service Quality Performance data are included. Based on a dataset the includes only airports that were in the top 50 for any year from 1990-2004. Only flights with similar characteristics operated in consecutive years for the same month are included. Aggregates will be affected by changes in distance for the underlying flights.,,,, "SOURCE: U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration, Bureau of Transportation Statistics (BTS), calculations using the following: USDOT, BTS, Airline Service Quality Performance data, July 2006.",,,,