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Washington Dulles International Airport (IAD) delays and on-time record

Dulles, Virginia KIAD #22 US airport by passengers

Live airport-wide delay programs from the FAA, the weather that causes them, and how each airline has actually performed at IAD.

FAA status
No delays reported Updated 7 min ago
Weather now
IFR 60°F Observed 35 min ago
Late departures
18.1%May 2026 to July 2026
Security line
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FAA delay status for IAD

The FAA is not reporting a ground stop, ground delay program or other delay at IAD right now.

Source: FAA National Airspace System Status, checked 7 min ago. Airline-specific delays are not shown here.

Current conditions at IAD

IFR

60°F16°C

Low cloud or poor visibility. Airports slow arrivals and delays become more likely.

Wind
330° 10 mph
Visibility
1.5 mi
Clouds
OVC 500 ft
Ceiling
500 ft
Conditions
-RA BR
Pressure
29.90 inHg

METARMETAR KIAD 111952Z 33009KT 1 1/2SM -RA BR OVC005 16/15 A2990 RMK AO2 RAB00 SLP124 P0003 T01560150 $

Source: NOAA Aviation Weather Center. Observed 35 min ago.

On-time performance at IAD

Based on 15,785 departures from May 2026 to July 2026. A flight counts as late when it leaves 15 or more minutes after schedule.

18.1%Departures late
18.0%Arrivals late
1.53%Cancelled
18.3 minAverage departure delay
On-time performance by airline at IAD
AirlineDeparturesLateCancelled
United Airlines 9,896 16.9% 0.92%
Republic Airways 2,260 15.9% 4.12%
Delta Air Lines 912 18.8% 1.97%
SkyWest Airlines 742 18.6% 0.81%
Frontier Airlines 576 29.5% 3.13%
American Airlines 522 27.8% 2.11%
Alaska Airlines 363 19.3% 0.83%
PSA Airlines 215 16.7% 2.79%
Allegiant Air 197 29.4% 1.02%
Southwest Airlines 102 40.2% 0.00%

Source: Bureau of Transportation Statistics, On-Time Performance of reporting carriers. Smaller regional carriers and some airlines are not included.

Late departures by month

AprMayJunJul

How delays work at IAD

A ground stop holds flights bound for IAD at their origin airports. A ground delay program spaces arrivals out so the airport is not overloaded. Departure and arrival delay messages describe the average wait the FAA expects. None of these tell you whether your own flight is late, so always check your airline as well.

Local tips

  • Dulles is very easy to use once you are past security. Walk to the concourses you need and plan your time on the AeroTrain.
  • The Silver Line Metro is a practical way to reach downtown Washington, D.C., but the walk from the station into the terminal takes about seven to eight minutes.
  • Pet relief areas are available both inside the concourses and outside the terminal.
  • Most lounges at Dulles require a ticket, a status level or a card, so check the access rules before you walk to the gate.