
Washington Dulles International Airport (IAD) is located in the unincorporated community of Dulles in Loudoun County, with a small portion in the unincorporated community of Chantilly in Fairfax County. The airport is one of the busiest in the nation, serving over 23 million passengers annually and offering flights to more than 125 destinations worldwide. IAD is accessible via the Washington Metro's Silver Line and is one of three major airports serving the Washington-Baltimore metropolitan area.
| Characteristics | Values |
|---|---|
| Name | Washington Dulles International Airport |
| Airport Code | IAD |
| Location | Dulles, Loudoun County, Virginia |
| Nearest place | Town of Herndon |
| Serves | Washington-Baltimore metropolitan area |
| Area rank | Fourth in the US |
| Annual passengers | Over 23 million |
| Daily passengers | 60,000+ |
| Destinations | 125+ |
| Airlines | United Airlines, Turkish Airlines, Lufthansa, Mesa, GoJet, CommuteAir, Southwest Airlines, etc. |
| Transport links | Washington Metro's Silver Line, Metrorail, taxi, rideshare |
| Roads | I-66, I-81, I-95, Dulles Access Highway |
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What You'll Learn
- Washington Dulles International Airport (IAD) is located in the unincorporated community of Dulles in Loudoun County
- A small portion of the airport is in the unincorporated community of Chantilly in Fairfax County
- The closest municipality to the airport is the Town of Herndon
- The airport is one of three major airports serving the Washington-Baltimore metropolitan area
- It is accessible via the Washington Metro's Silver Line

Washington Dulles International Airport (IAD) is located in the unincorporated community of Dulles in Loudoun County
The airport is one of the nation's busiest, serving over 23 million passengers annually, with a record of 27.25 million passengers in 2024. It is accessible via the Washington Metro's Silver Line and is approximately 16 miles from exit 67 when going west on I-66.
Washington Dulles International Airport is a hub for United Airlines and is frequently used by Star Alliance members such as Turkish Airlines and Lufthansa, with which United has codeshare agreements. The airport also serves as a hub for regional operators Mesa, GoJet, and CommuteAir, operating under the United Express brand.
The airport's terminal complex consists of the Main Terminal, which includes four of the original gates known as the "Z" Gates, and two parallel midfield terminal buildings: Concourses A/B and Concourses C/D. The entire complex has a total of 139 gates, with 123 jetways and 16 hardstand locations where passengers can board or disembark using the airport's plane mate vehicles.
Washington Dulles International Airport has been featured in several films, including the 1964 movie "Seven Days in May" and the 1983 comedy "D.C. Cab," showcasing scenes outside the main terminal. Portions of the "Airport" film series and the 1999 comedy "Forces of Nature" were also filmed at the airport.
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A small portion of the airport is in the unincorporated community of Chantilly in Fairfax County
Washington Dulles International Airport (IAD) is one of the busiest airports in the United States. It is the fourth-largest airport in the US by land area and the busiest airport in Virginia. The airport is located in the unincorporated community of Dulles in Loudoun County, with a small portion situated in the unincorporated community of Chantilly in Fairfax County. Chantilly is a small town in Fairfax County, Virginia, and is home to the Sully Historic Site, which preserves the history of the area, including that of the Chantilly plantation. The town is also known for its shopping centres, including Chantilly Crossing and the Sully Plaza Shopping Center.
The airport's terminal complex consists of the Main Terminal, which includes four of the original gates known as the "Z" Gates, and two parallel midfield terminal buildings: Concourses A/B and Concourses C/D. The entire complex has a total of 139 gates, 123 of which have jetways, and 16 hardstand locations where passengers can board or disembark using the airport's plane mate vehicles. Dulles is one of the few remaining airports to utilise these mobile lounges or "people movers", now only used for transport to the International Arrivals Building and Concourse D.
IAD is accessible via the Washington Metro's Silver Line and is one of three major airports serving the Washington-Baltimore metropolitan area, along with Ronald Reagan Washington National Airport (DCA) and Baltimore/Washington International Airport (BWI). In 2024, the airport set a record with 27.25 million passengers, and as of that year, it was the 28th busiest airport in the US. The airport serves as a hub for United Airlines and is frequently used by Star Alliance members such as Turkish Airlines and Lufthansa, with which United has codeshare agreements.
The airport has been featured in several films, including "Seven Days in May" (1964), "D.C. Cab" (1983), and "Forces of Nature" (1999). It has also been the site of notable aviation incidents, including a blown tire on an Air France Concorde during take-off in 1979, and the hijacking of American Airlines Flight 77, a Boeing 757, on September 11, 2001.
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The closest municipality to the airport is the Town of Herndon
Washington Dulles International Airport (IAD) is one of the busiest airports in the United States, serving over 23 million passengers annually. It is located in the unincorporated community of Dulles in Loudoun County, with a small portion situated in the unincorporated community of Chantilly in Fairfax County.
IAD is a major hub for United Airlines and several other carriers, including Star Alliance members such as Turkish Airlines and Lufthansa. It serves more than 125 destinations worldwide, with approximately 60,000 passengers travelling through daily. The airport has a vast terminal complex, including the Main Terminal and two parallel midfield terminal buildings: Concourses A/B and C/D, totalling 139 gates.
The Town of Herndon is situated nearby, offering convenience for travellers visiting or connecting through IAD. The town's proximity to the airport may result in increased economic activity and provide accommodation and dining options for those with layovers or delays. Herndon likely benefits from the airport's high passenger traffic, with approximately 90% of the international passenger traffic in the Baltimore-Washington region flowing through IAD.
Overall, the Washington Dulles International Airport plays a crucial role in the region's aviation industry, and its close relationship with the Town of Herndon is an essential aspect of its operations and the local community.
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The airport is one of three major airports serving the Washington-Baltimore metropolitan area
Washington Dulles International Airport (IAD) is located in the US state of Virginia. It is one of three major airports serving the Washington-Baltimore metropolitan area, alongside Ronald Reagan Washington National Airport (DCA) and Baltimore/Washington International Airport (BWI).
IAD is situated in the unincorporated community of Dulles in Loudoun County, with a small portion in the unincorporated community of Chantilly in Fairfax County. The Town of Herndon is the closest municipality to the airport. The airport is accessible via the Dulles Access Highway, which is restricted to airport traffic, and the Washington Metro's Silver Line.
IAD is a significant aviation hub, ranking as the fourth-largest airport in the US in terms of land area. It is also one of the busiest airports in the country, serving over 23 million passengers annually. In 2024, the airport set a new record, accommodating 27.25 million passengers. IAD is a hub for United Airlines and is frequently used by Star Alliance members such as Turkish Airlines and Lufthansa. The airport has a total of 139 gates, with 123 jetways and 16 hardstand locations for plane mate vehicle boarding.
The airport has a rich history in aviation, dating back to its conception in the early planning sessions of 1959. It has been featured in several films, including "Seven Days in May" (1964) and the comedy "DC Cab" (1983). IAD was also the site of a notable incident in 2011 when a United Airlines flight was forced to turn back due to a smoky cockpit. Additionally, IAD played a role in the September 11 attacks, as American Airlines Flight 77, which crashed into the Pentagon, originated from the airport.
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It is accessible via the Washington Metro's Silver Line
Washington Dulles International Airport (IAD) is located in the unincorporated community of Dulles in Loudoun County, with a small portion in the unincorporated community of Chantilly in Fairfax County. The Town of Herndon is the closest municipality to the airport. Washington Dulles International Airport is one of three major airports serving the Washington–Baltimore metropolitan area.
Access via Washington Metros Silver Line
Washington Dulles International Airport is connected directly to Metro's Silver Line. From the airport, follow the signs to the underground walkway, which is approximately five minutes from the terminal. Use Metro's Silver Line to get to the Washington Dulles International Airport Metrorail Station, Silver Line Centre Platform. The underground path is approximately five minutes from the station to the terminal, with moving sidewalks and escalators to help with the journey.
The Washington Metropolitan Area Transit Authority operates a subway from Metro Centre, Blue/Orange/Silver Line Centre Platform to Washington Dulles International Airport Metrorail Station, Silver Line Centre Platform every 15 minutes.
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Frequently asked questions
Washington Dulles International Airport (IAD) is located in the unincorporated community of Dulles in Loudoun County, with a small portion in the unincorporated community of Chantilly in Fairfax County.
The airport is accessible via the Washington Metro's Silver Line. If you are driving, you can access the airport via the Dulles Access Highway, which is restricted to airport traffic.
Washington IAD is one of the nation's busiest airports, serving over 23 million passengers a year. In 2024, the airport set a new record with 27.25 million passengers. It is the busiest airport in Virginia and the Baltimore-Washington Metropolitan Area.
Washington IAD offers a range of dining options, including casual and upscale eateries. The airport has also been used as a filming location for several movies, including "Seven Days in May" and "D.C. Cab".






























