Washington Dulles International Airport

IAD KIAD  Washington, United States

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IAD at a glance

  • What it is: Washington Dulles International Airport is a major international airport serving Washington, United States.
  • Codes: IAD on your ticket, KIAD on the radar.
  • How busy: the reference profile lists about 25.0 million annual passengers across 4 runways.
  • Main airline: United Airlines bases aircraft here.
  • Right now: 53 aircraft are within 55 km, shown live on the map above.
  • Local time zone: America/New_York (UTC-4), so every time shown for IAD is local rather than UTC.

Aircraft observed near IAD

53 aircraft are within 55 km of IAD right now. This is live ADS-B traffic, not a published timetable: aircraft are classified by what they are physically doing - Climbing out, on approach, or holding at cruise overhead. For gate numbers and scheduled times, check with IAD directly or your airline.

Departing now

FlightOperatorRouteStatusAltitudeSpeed
GAF944 route not published on stand or taxiing 25 kts
JZA539 route not published on stand or taxiing
UAL2268 United Airlines route not published on stand or taxiing 8 kts
N350SP route not published on stand or taxiing 15 kts
UCA4932 route not published on stand or taxiing
BAW291 British Airways route not published on stand or taxiing 10 kts
AMX456 Aeroméxico route not published on stand or taxiing 11 kts
AA1C48 route not published on stand or taxiing 17 kts

Arriving now

FlightOperatorRouteStatusAltitudeSpeed
UAL983 United Airlines route not published on approach 1,825 ft 175 kts
AAL2769 American Airlines route not published on approach 10,150 ft 318 kts
AVL127 route not published on approach 625 ft 51 kts
TAI582 route not published on approach 5,400 ft 255 kts
SENTRY7 route not published on approach 350 ft 43 kts
UCA4824 route not published on approach 5,875 ft 276 kts
RPA4584 route not published on approach 1,150 ft 126 kts
AVL128 route not published on approach 825 ft 66 kts

Overhead and in the area

FlightOperatorRouteStatusAltitudeSpeed
CXK282 route not published in the area 1,300 ft 116 kts
N444AM route not published in the area 22,000 ft 368 kts
JBU625 JetBlue Airways route not published in the area 26,000 ft 449 kts
FFT1689 route not published in the area 37,450 ft 464 kts
ASA8 Alaska Airlines route not published in the area 4,200 ft 277 kts
DAL2404 Delta Air Lines route not published in the area 34,000 ft 433 kts
PAT24 route not published in the area 1,675 ft 127 kts
JIA5292 route not published in the area 3,200 ft 216 kts
25.0M
Annual passengers (reference)
4
Runways
1
Terminals
313 ft
Field elevation

About IAD

The main long-haul international gateway for the Washington region and a major United Airlines hub. Its main terminal, designed by Eero Saarinen with a sweeping suspended roof, is a recognised landmark of modern architecture. The airport originally used mobile lounges to carry passengers to midfield concourses, and a few still run alongside the underground AeroTrain.

Washington Dulles International Airport opened in November 1962. President John F. Kennedy dedicated it, and it was named for John Foster Dulles, a former secretary of state. Dulles was the first American airport built specifically for jet planes. It sits on a huge, spread out site in Virginia farmland, about 26 miles from downtown Washington. That it could never be boxed in later by nearby buildings.

Architect Eero Saarinen designed the main terminal, a soaring, dramatic building with a roof that hangs from cables between tall columns. Many consider it one of the finest works of twentieth century American architecture, and it is now a protected landmark. Saarinen's plan avoided long walking concourses. Instead it used mobile lounges, large vehicles that carried passengers straight from the terminal to planes parked on open ramps.

Some mobile lounges are still used today, decades after other airports dropped the idea. For its first twenty years, Dulles saw few passengers because travelers preferred nearby National Airport. The main terminal was doubled in length in 1996. An underground train called the AeroTrain opened in 2010. A subway line, the Metro Silver Line, reached the airport in 2022. Dulles is United Airlines' main East Coast gateway for international flights.

How IAD operates today

Dulles has four runways. Three run north to south side by side. A fourth, called 12/30, is a crosswind runway, built at an angle to catch winds blowing from the side. The site is large enough to add even more runways later.

The Saarinen main terminal handles ticketing and security. Passengers then reach midfield concourses by the AeroTrain or by the surviving mobile lounges, still the only way to some gates. United Airlines runs a large hub here with heavy transatlantic service and growing routes to Asia and Africa. Many foreign airlines also use Dulles as their Washington gateway. Cargo traffic is significant, and government travel keeps the airport busy.

Top routes from IAD

DestinationMain airlinesWhy it matters
London (LHR) United, British Airways, Virgin Atlantic The busiest transatlantic route, carrying heavy government, business, and connecting traffic.
San Francisco (SFO) United A key transcontinental route linking two United hubs and feeding Pacific connections.
Los Angeles (LAX) United, Alaska Airlines The largest West Coast route, flown with widebodies at peak times.
Denver (DEN) United, Southwest A high frequency hub to hub route that feeds United's western network.
Chicago (ORD) United, American Connects Washington with United's largest hub, flown many times a day.

Facts about IAD

  • Dulles was the first airport in the United States designed from the outset for jet airliners.
  • Eero Saarinen's main terminal is a protected landmark, and its 1996 extension followed his original design.
  • Mobile lounges, huge vehicles that carry passengers out to aircraft, are still in daily use decades after other airports dropped the idea.
  • The Smithsonian's Udvar-Hazy Center, home to a Space Shuttle and a Concorde, sits on the airport's grounds.

Plane spotting at IAD

The airport has a dedicated observation area on the north side off Route 606, and the Udvar-Hazy Center's observation tower gives a high wide view across the field. United widebodies and a long list of foreign flag carriers make the mix unusually varied. New to spotting? Start with our aircraft identification guide and the world's best spotting airports.

IATA / ICAO
IAD / KIAD
Location
Washington, United States 38.953, -77.457
Time zone
America/New_York
Opened
1962
Hub for
United Airlines

Airlines hubbed at IAD

Tracked flights using IAD

Selected scheduled services whose curated route starts, ends or stops at Washington Dulles International Airport.

FlightRouteTypical aircraft
ET338 ADDIAD Boeing 777-300ERTrack ET338 →

Nearby and related airports

Geographically close airports and useful alternatives in United States.

More airports and guides connected to IAD

Most of the tails you see here belong to United Airlines. How a field like this runs day to day is covered in how airports work. Nearby, Baltimore (BWI) serves the same country. The codes IAD and KIAD are explained in airport codes decoded.

Data sources and review

Reviewed 2026-07-29 by Flight-Tracker.net Editorial Team

Passenger, runway, terminal and hub figures are maintained as a reviewed reference snapshot, not a live operational record. Check the airport directly before travelling.

Read our airport data sourcing and review process, or inspect the machine-readable reference dataset.

Frequently asked questions about IAD

What is the airport code for Washington Dulles International Airport?

Washington Dulles International Airport uses the IATA code IAD on tickets and baggage tags, and the ICAO code KIAD in flight plans and on radar. The leading “K” in KIAD is the region marker: ICAO codes are grouped geographically, which is why airports near each other usually share their first letter or two while their IATA codes look unrelated.

How many runways does IAD have?

Washington Dulles International Airport operates 4 runways across 1 passenger terminal. The field sits at 313 ft above sea level.

How busy is IAD?

This reference profile lists roughly 25.0 million annual passengers for Washington Dulles International Airport. You can see aircraft observed departing, arriving and overhead on this page, taken from live ADS-B broadcasts.

Which airlines are based at IAD?

United Airlines treat IAD as a hub or major base. Many other carriers serve the airport without basing aircraft there.

How many terminals does IAD have?

This reference lists Washington Dulles International Airport with 1 passenger terminal. Check the airport or operating airline for the terminal assigned to a specific flight.

What time zone is IAD in?

Washington Dulles International Airport runs on America/New_York, currently UTC-4. Flight trackers work in UTC internally, so the seven-day history on our flight pages is stamped UTC while the boards on this page are in IAD local time - worth remembering when the two disagree by a whole calendar day.

Can I track flights at IAD live?

Yes. The map on this page shows every aircraft broadcasting its position within about 55 km of Washington Dulles International Airport, and there are 53 in range as this page loaded. The boards split them into departures, arrivals and traffic passing overhead, all timed in America/New_York.