National Airspace System: Summary of Flight Delay Trends for 34 Airports in the Continental United States (GAO-10-543SP, May 26, 2010), an E-supplement to GAO-10-542

Washington Dulles International (IAD) Departure Data

Year Annual departures
(in thousands)		 Percent change
in annual departures		 Percent of annual
departures that
were delayed		 Percentage point
change in annual
departures that
were delayed		 Average delay per
delayed departure
(in minutes)
2000 65 -- 21.6 -- 62.8
2001 55 -14.7 16.9 -4.7 58.5
2002 47 -14.3 10.7 -6.2 57.8
2003 53 12.9 12.3 1.6 58.3
2004 61 13.9 16.6 4.3 54.8
2005 67 10.4 19.6 2.9 58.0
2006 102 52.5 24.1 4.6 64.7
2007 96 -6.2 23.9 -0.2 64.2
2008 82 -14.3 22.7 -1.2 66.8
2009 74 -10.0 17.5 -5.2 64.3

Source: GAO analysis of FAA's ASPM data
Note: The percentage change in departures and the change in percentage points of departures that were delayed may not compute due to rounding.

Bar and line plot of Year

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