Washington Dulles International Airport (IAD) is the 24th busiest airport in North America in terms of passenger traffic, which decreased by 2.8% in 2013 to 21.8 million. During this time the number of operations (landings and take-offs) also decreased by 1.4% to 307,748. In 2013, IAD was the 20th busiest airport in terms of cargo volume; 252,483 metric tons (277,731 U.S. tons) of freight and mail passed through its facilities.

United Airlines (including its regional affiliates) operate the majority of the average daily domestic flights from IAD. In addition to adding a new runway, several NextGen capabilities and enabling improvements have been implemented at IAD. These improvements include Airport Surface Detection Equipment — Model X (ASDE-X), Performance Based Navigation (PBN) procedures, basic rerouting, and Time Based Flow Management (TBFM).

All airport information shown above is reported by Calendar Year (CY); results in the table below are reported by Fiscal Year (FY), October 1 — September 30.

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Efficiency Performance Indicators
Performance Indicator (FY) 2009 2010 2011 2012 2013
Average Gate Arrival Delay
Minutes per Flight

During reportable hours, the yearly average of the difference between the Actual Gate-In Time and the Scheduled Gate-In Time for flights to the selected airport from any of the Aviation System Performance Metrics (ASPM) airports. The delay for each fiscal year is calculated based on the 0.5 — 99.5 percentile of the distributions for the year. Flights may depart outside reportable hours, but must arrive during them. The reportable hours vary by airport.

0.9 0.0 3.0 2.0 3.5
Average Number of Level-offs Per Flight
Counts per Flight

The count of instances of level-offs as flights descend from cruise altitudes to the arrival airport, averaged for the fiscal year.

1 1 3.6 3.4 3.4
Distance in Level Flight from Top of Descent to Runway Threshold
Nautical Miles per Flight

The distance flown in level flight as flights descend from cruise altitudes to the arrival airport, averaged for the fiscal year.

1 1 52.3 49.4 48.5
Effective Gate-to-Gate Time
Minutes per Flight

During reportable hours, the difference between the Actual Gate-In Time at the destination (selected) airport and the Scheduled Gate-Out Time at the origin airport. Flights may depart outside reportable hours, but must arrive during them. The reportable hours vary by airport and the results are reported by fiscal year.

140.8 139.0 138.6 143.6 145.4
Taxi-In Time
Minutes per Flight

During reportable hours, the yearly average of the difference between Wheels-On Time and Gate-In Time for flights arriving at the selected airport from any of the Aviation System Performance Metrics (ASPM) airports. Flights may depart outside reportable hours, but must arrive during them. The reportable hours vary by airport.

6.9 7.1 7.1 6.9 6.7
Taxi-Out Time
Minutes per Flight

During reportable hours, the yearly average of the difference between Gate-Out Time and Wheels-Off time for flights from the selected airport to any of the Aviation System Performance Metrics (ASPM) airports. Flights must depart during reportable hours, but may arrive outside them. The reportable hours vary by airport.

18.6 17.9 17.6 16.7 17.6
1 Consistent data for the time period prior to FY 2011 is not available.

Efficiency addresses the operational and economic cost-effectiveness of gate-to-gate flight operations from a single-flight perspective. In all phases of flight, airspace users want to depart and arrive at the times they select and fly the trajectory they determine to be optimum.

Capacity Performance Indicator
Performance Indicator (FY) 2009 2010 2011 2012 2013
Average Daily Capacity
Operations (arrivals plus departures)

During reportable hours, the average daily sum of the Airport Departure Rate (ADR) and Efficiency Airport Arrival Rate (Eff AAR) reported by fiscal year. The Reportable Hours vary by airport. Additional ADR and Eff AAR information is provided in the Average Daily Capacity entry of the Reference Guide.

2,103 2,080 2,037 2,168 2,164

Utilize available airport capacity to meet the National Airspace System users' demand at all times and in all approach conditions.

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