Main terminal
Holds ticketing, check-in, the security checkpoints, baggage claim and the ground transportation level. The Silver Line Metro station is connected by a tunnel.
Washington Dulles International Airport (IAD)
Dulles, Virginia KIAD #22 US airport by passengers
In Loudoun County, Virginia, west of downtown Washington, D.C. It is reached by the Silver Line Metro, the Dulles Toll Road and the Dulles Access Road.
- FAA status
- Checking Updated 1 h ago
- Weather now
- VFR 53°F Observed 2 h ago
- Late departures
- 18.1%May 2026 to July 2026
- Security line
- No recent reportsAdd yours
IAD at a glance
Dulles is a large airport designed by Eero Saarinen. It has one main terminal building, which holds ticketing, check-in, baggage claim and security, and a set of concourses that run parallel to it.
The concourses are reached by an underground train called the AeroTrain, by a walkway, or by a shuttle bus. Most transfers stay inside security, so you do not need to be screened again. Concourse E is expected to open in late 2026.
Main airlines: United Airlines is the dominant carrier, with a major hub here. Many international airlines and several low-cost carriers also operate from the airport.
FAA delay status for IAD
We are waiting for the next FAA update. Check your airline for the status of a specific flight.
Source: FAA National Airspace System Status, checked 1 h ago. Airline-specific delays are not shown here.
Current conditions at IAD
VFR
53°F12°C
Good visibility and high cloud base. Normal operations are typical.
- Wind
- 330° 5 mph
- Visibility
- 10+ mi
- Clouds
- OVC 25,000 ft
- Ceiling
- 25,000 ft
- Pressure
- 30.38 inHg
METARMETAR KIAD 101152Z 33004KT 10SM OVC250 12/09 A3038 RMK AO2 SLP286 T01170094 10117 20094 52026 $
Source: NOAA Aviation Weather Center. Observed 2 h ago.
Full weather, TAF, forecast and runways →
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
| Airline | Departures | Late |
|---|---|---|
| United Airlines | 9,896 | 16.9% |
| Republic Airways | 2,260 | 15.9% |
| Delta Air Lines | 912 | 18.8% |
| SkyWest Airlines | 742 | 18.6% |
| Frontier Airlines | 576 | 29.5% |
| American Airlines | 522 | 27.8% |
Source: Bureau of Transportation Statistics, On-Time Performance of reporting carriers. Smaller regional carriers and some airlines are not included.
Late departures by month
Terminals
Concourses A and B
Reached by a walkway or the AeroTrain. A and B hold many airline gates and the Chase Sapphire and British Airways lounges.
Concourse C
Reached by the AeroTrain. This is where the United Polaris Lounge is located, and many United gates are here.
Concourse D
Reached by a shuttle bus from the main terminal, or on foot from Concourse C. It is used by many international flights.
Concourse Z
Reached by walkway from the main terminal. Concourse Z has a small number of gates.
Moving between terminals
The AeroTrain connects the main terminal to Concourses A, B and C, and each trip takes about two minutes. Concourse D is served by a shuttle bus from the main terminal, and Concourses C and D connect on foot. These transfers all happen inside security, so you do not need to be screened again. Concourse E is due to open in late 2026.
Getting to and from IAD
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Rail
Silver Line Metro
The Dulles station is connected to the main terminal by a climate-controlled tunnel. The walk takes about seven to eight minutes. Fares depend on the time of travel, and the station is also next to Parking Garage 1.
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Shuttle
Silver Line Express and hotel shuttles
Silver Line Express service and hotel shuttles operate from the ground transportation level. Ask your hotel for its pick-up point before you arrive.
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Rideshare and taxi
Ground transportation level
Taxis and shared vans run 24 hours a day from designated curbs. Uber and Lyft have their own pick-up areas on the same level.
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Rental car
Rental car shuttles
Rental car companies are served by shuttles that leave from the ground transportation level, which also has a rest area for pets.
Tips for IAD
- 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.
Frequently asked questions
Can I walk between Dulles concourses after security?
Yes. The AeroTrain links the main terminal to Concourses A, B and C, and the concourses link to each other by walkway or shuttle. None of these transfers require a new security check.
How do I get from Dulles to downtown Washington, D.C.?
Take the Silver Line Metro. The station is connected to the main terminal by a tunnel, and the walk takes about seven to eight minutes.
Which lounge is the easiest to reach at Dulles?
The Capital One Lounge sits just past TSA PreCheck, and the lounge asks only for a boarding pass with a confirmed seat assignment. Most other lounges require a ticket, status or card.
How busy is IAD?
About 13,859,569 passengers boarded flights at Washington Dulles International Airport in 2025, according to FAA enplanement data. That ranks it number 22 among US airports.
How often are flights late at IAD?
Over May 2026 to July 2026, 18.1% of departures at IAD left 15 or more minutes late, and 1.53% of flights were cancelled (Bureau of Transportation Statistics).
Guide content last reviewed October 9, 2026. Report a correction