IAD Airport Code, Washington Dulles International Airport
IAD is the IATA airport code for Washington Dulles International Airport, the main international gateway for Dulles, United States. Pilots and air traffic control use its ICAO code, KIAD.
What airport is IAD?
IAD is the IATA airport code for Washington Dulles International Airport, in Dulles, United States. The same airport has the ICAO code KIAD.
It is a major hub, ranked number 72 by scheduled connections in the open dataset. Its ICAO code KIAD begins with K, the prefix ICAO assigns to the contiguous United States.
| IATA airport code | IAD |
|---|---|
| ICAO airport code | KIAD |
| Airport | Washington Dulles International Airport |
| City | Dulles |
| Country | United States |
| Main airlines | UA, AA, DL |
| Runways | 4 |
Airport data comes from OurAirports (public domain), regenerated here on . How we build this · Data and sources.
Where is IAD airport located?
Washington Dulles International Airport (IAD) is in Dulles, United States, at coordinates 38.9445, -77.4558.
It lies in the northern and western hemispheres, at 38.94° N, 77.46° W. It is close to sea level at 312 ft (95 m), typical of a coastal or low-lying airport.
Runways at IAD
It has 4 runways. The longest is 11,500 ft (3.51 km), designated 01C/19C.
Which airlines fly to IAD?
The open route dataset lists UA (United Airlines), AA (American Airlines), DL (Delta Air Lines), US (US Airways), B6 (JetBlue Airways), AF (Air France) as operating carriers on nonstop routes touching Washington Dulles International Airport.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Where the IAD code comes from
IAD is Washington Dulles, and the scrambled letters are deliberate. The airport was first assigned DIA, for Dulles International Airport, but in handwriting and hurried telex DIA and the neighbouring DCA were constantly confused, so in 1968 the letters were reversed to IAD. Few codes exist purely to be legible.
Curious why codes look the way they do? Read how airport codes work.
Frequently asked questions
What is the IATA code for Washington Dulles International Airport?
The IATA code for Washington Dulles International Airport in Dulles is IAD. It is the three-letter code on tickets, baggage tags and departure boards.
What is the 3-letter code for Dulles?
The 3-letter IATA code for Washington Dulles International Airport in Dulles is IAD.
What is the ICAO code for Washington Dulles International Airport?
The ICAO code for Washington Dulles International Airport is KIAD. Pilots and air traffic control use it, while airlines and booking systems use the IATA code IAD.
What is the difference between IAD and KIAD?
IAD is the IATA code used for tickets and baggage. KIAD is the ICAO code used by pilots and air traffic control for the same airport, Washington Dulles International Airport.
Why is Dulles airport IAD and not DIA?
Dulles was originally coded DIA, but the code was too easily confused with DCA, Washington National, especially in handwritten and teletype form. The letters were reversed to IAD in 1968 to keep the two Washington airports unmistakable.
Read more about Washington Dulles International Airport on Wikipedia →
Nearby and related airports
Other airports in United States and the wider region:
Popular routes from IAD
Distance and typical flight time from Washington Dulles International Airport to other airports it connects with:
All 3 Washington airports · All airports in United States · Busiest airports worldwide · IAD as JSON