Washington Dulles International Airport [IAD]: Ultimate Terminal Guide

Key Takeaways

• Washington Dulles International Airport (IAD) features a main terminal with 5 concourses (A, B, C, D, and Z) connected by the AeroTrain, serving various domestic and international flights.
• The airport offers dining, shopping, and lounges, including a Capital One Lounge and a United Club.
• Ground transportation includes rental cars, ride-hailing services, Washington Flyer taxicabs, and the Silver Line Metro, ensuring easy access to Washington, D.C.

Washington Dulles International Airport (IAD) served more than 29 million passengers in 2025, with over a third of its passenger traffic from international flights.

IAD is a hub for United Airlines, which serves only concourses C and D.

Quick Info

Airport: Washington Dulles International Airport (IAD)
Terminals: 1 terminal with 5 concourses: A, B, C, D, and Z
Airport address: 1 Saarinen Cir., Dulles, VA 20166
Distance from downtown Washington: 26 miles (42 kilometers)
Website: flydulles.com
Phone number: 703-572-2700
Passengers served: 29 million annually (2025)
Destinations: 100 domestic and 63 international destinations
Flight information: Departures and arrivals info can be found online

IAD Terminal Map

Airlines Operating From IAD

IAD Airport Terminal

Washington Dulles International Airport has a straightforward layout that allows passengers to move easily between connecting flights and areas around the airport. IAD has 1 main terminal building outside of the secure area and 5 airside concourses parallel to the terminal.

Passengers may move between concourses via a pedestrian walkway (A, B, and Z gates only) or ride the AeroTrain. Car parking and ground transportation are outside the terminal.

The terminal is split across 2 levels, with departures on the upper level and arrivals on the lower level. Both levels have road access outside for curbside drop-off and pickup.

The road system has 3 levels: departures, arrivals, and ground transportation, with ground transportation on the lower level outside the terminal.

There are 4 ticketing areas on the terminal’s upper level, corresponding with 4 drop-off areas outside, depending on your airline.

After ticketing, there are 2 security checkpoints (east and west) on level B1. After security, passengers can access the pedestrian walkway to the A/B gates, AeroTrain stations, Z gates, or the D gates shuttle bus.

Arrivals is on the lower level, with baggage claim spanning the entire width of the terminal. International arrivals is on the west side of the airport, with customs and immigration.

Concourses

Once inside the secure area, passengers have access to 5 concourses: A, B, C, D, and Z. Transportation options are outlined in the interterminal transport section below.

Concourse A

Concourse A is the main concourse for international flights. Gates A1A to A6A are at the end of the concourse on the lower level used for smaller, regional flights, and gates A14 to A32 are on the upper level near the pedestrian walkway from the terminal.

There are shops and restaurants at the upper- and lower-level gate areas, along with the Virgin Atlantic Clubhouse, Air France-KLM Lounge, and Etihad Lounge on the upper level.

Concourse B

Concourse B has 28 gates, numbered B37 to B38, B40 to B45, B47 to B51, B62 to B67, B70 to B76, and B78 to B79. The Turkish Airlines Lounge, British Airways Galleries Lounge, and Lufthansa Lounge are all in Concourse B, with food and dining including &pizza, Chick-fil-A, and Five Guys, as well as shops such as DC Marketplace and Tumi.

Concourse C

Concourse C has 24 gates, numbered C1 to C9, C11, C12, C14, C17 to C20, C22 to C25, and C26, C27, C27A, and C28. Concourse C has 2 United Club lounges (next to Gates C7 and C17), a United Polaris Lounge, and shopping and dining, including Starbucks and Be Right Burger.

Concourse D

Concourse D has 27 gates, numbered D1 to D8, D10 to D12, D14 to D16, D18 to D21, D23 to D27, D29, D30, and D32. Aside from a United Club lounge, you can find 2 Dunkin’ stores, a Chick-fil-A, and a Starbucks.

Concourse Z

Concourse Z consists of 4 gates, numbered Z6, Z7, Z9, and Z10. It’s close to the main terminal and exit to baggage claim, with a Subway and a Dunkin’, but that’s about it!

Interconcourse Transport

AeroTrain

The AeroTrain is an automated rail service that runs underground between the terminal and the concourses within the secure area. It’s a quick option for passengers traveling to and from their gates, with just 2 minutes between stations.

AeroTrain lines operate:

• After the west security checkpoint, transporting passengers to Concourse B
• After the east security checkpoint, transporting passengers to Concourse A and Concourse C

People Mover

The people movers (originally called mobile lounges) that operate at IAD are half jet bridge, half bus. They elevate up to the aircraft door, and passengers disembark directly into the people mover to be transported to the terminal or concourse.

Once a feat of modern technology, the people movers are seem outdated in comparison to the efficient AeroTrain, but many still operate between:

• The main terminal and Concourse D
• Concourse D and Concourse A

Walking

Passengers can walk from the main terminal to Concourse A via an underground tunnel with moving walkways. It’s then possible to walk from Concourse A to B.

Concourses A and B are interlinked, as are C and D, so passengers may walk between concourses to use the facilities.

Security and Customs at IAD

IAD has 3 security checkpoints in the terminal: east, west, and a TSA PreCheck checkpoint between them.

The checkpoints operate during these hours:

• East checkpoint: 3:45 a.m. to 10:30 p.m.
• West checkpoint: 4:45 a.m. to 9 p.m.
• TSA PreCheck: 4:30 a.m. to 9 p.m.

Although these checkpoints have limited hours, security screening is available 24 hours a day. After-hours screening lanes are next to the TSA PreCheck checkpoint and are open after 10:30 p.m.

TSA PreCheck enrollment is through CLEAR+, with kiosks at the PreCheck checkpoint in the center of the terminal. Enrollment is available daily from 6 a.m. to 9 p.m.

Hot Tip:

Check out our article on the average TSA security wait times to see how long you could wait in line at IAD. 

Global Entry Program

IAD has Global Entry kiosks for approved passengers. There’s an enrollment center at the west end of the main terminal on the arrivals level, open daily from 7 a.m. to 10 p.m.

The airport also participates in Enrollment on Arrival, offering conditionally approved applicants to complete their interview on arrival.

Mobile Passport

IAD accepts Mobile Passport for U.S. citizens and Canadian visitors. Passengers can enter their information in the app instead of completing an arrival form, and once they receive an electronic receipt, they can present it to a CBP agent.

CLEAR+

There are dedicated CLEAR+ security program kiosks at the TSA PreCheck and east security checkpoints for enrolled passengers. These are open daily from 4:30 a.m. to 9:30 p.m., with enrollment available during the same hours.

IAD Airport Lounges

IAD has 11 lounges (including a Capital One Lounge), all in the departure concourses. Most are accessible only to eligible visitors, such as premium cabin passengers or frequent flyers.

* Hours are subject to change without notice. Lounge access may be restricted at times because of capacity.
** Day pass for any passenger. Lounges marked as N/A only allow entry for eligible passengers in their premium cabins, frequent flyer programs, or participating credit card programs.

Hot Tip:

Avoid lounge entry fees with these credit cards for airport lounge access.

Priority Pass Access

Priority Pass members may access the following lounges depending on their membership type:

• Air France-KLM Lounge
• Chef Geoff’s (valid for $28 off the bill)
• Etihad Lounge
• Turkish Airlines Lounge
• Virgin Atlantic Clubhouse

Find out more about Priority Pass memberships and the best credit cards with Priority Pass access.

Dining and Drinks at IAD

IAD has over 40 restaurants, cafes, and fast-food counters, from Starbucks to Five Guys. The terminal’s lower level offers the most choices outside the secure area, and each concourse offers a range of options inside the secure area.

IAD Wi-Fi and Charging Points

IAD provides free Wi-Fi for passengers in the terminal and concourses. Select “#IAD Free WiFi” from the available connections and put in your email address and ZIP code when prompted to connect. For assistance, passengers may email techWORKS@mwaa.com.

Charging stations: Charging points are available at:

• Near the people mover station after security
• Concourse A: near gates A1G, A3A, A15, A20, and A26
• Concourse B: near gates B37, B40, B42, and B62
• Concourse C: near every gate excluding C12, C14, C23, and C24
• Concourse D: near gate D1, D3, D4, D7, D11, D12, D15, D18, and D19
• Concourse Z: near gate Z10

Hot Tip:

Not all airports offer free Wi-Fi. If you don’t want to worry about being disconnected, consider investing in a mobile hot spot. 

IAD Airport Lost and Found

IAD’s lost and found office is behind baggage claim 2 on the arrivals level. Passengers who have lost an item in any of the airport’s public areas, on the AeroTrain, or on a shuttle bus may visit the office, call 703-572-8479, or report a lost item online. The office is open Monday through Friday, 8 a.m. to 4 p.m.

Passengers who leave an item on an aircraft must contact the applicable airline.

If an item is left at a security checkpoint, passengers can submit a claim.

Additional Airport Information

Information Services

Information desks are in the following locations, staffed by Traveler’s Aid volunteers:

Terminal

• Departures level, 2 kiosks at the front of the terminal
• Arrivals level, near baggage claims 6, 11, and 14
• Just past the east and west security checkpoints

Concourse

• Concourse A, near gate A15
• Concourse B, near gate B62
• Concourse C, near gate C20
• Concourse D, near gate D16

Children’s Play Areas

IAD has a children’s play area in Concourse B, near gate B70. This large play area was developed with NASA. However, IAD did not earn a top spot in our study of the most kid-friendly U.S. airports.

Baby Facilities

IAD has 8 nursing rooms:

• Near the restrooms, opposite baggage claims 2, 6, 11, and 14
• Concourse A, near gate A20
• Concourse B, near gate B70 (including a private restroom)
• Concourse C, near gate C11 (including a sink)
• Concourse D, near gate D1

Traveling With a Pet

IAD has 4 pet relief areas:

• Departures level, outside of the terminal at both ends
• Concourse A, near gate A32
• Concourse D, near gate D1

Duty-Free

IAD has 4 duty-free shops:

• Concourse A, near gate A32
• Concourse B, near gates B37 and B63
• Concourse D, near gates D16

Smoking Areas

IAD is entirely smoke-free inside the terminals. Smoking is only permitted outside terminals at least 20 feet from the entrances.

Money

ATMs are scattered throughout the airport, and foreign currency services are available at:

• Ticketing east
• Ticketing west
• Concourse A/B Center
• Concourse C, near gates C8 and C12
• Concourse D, in the rotunda
• International arrivals area

Luggage Storage

As with other U.S. airports, IAD does not provide luggage storage.

Important IAD Phone Numbers

Customer service: 703-572-2700

Customer paging: 703-572-2700

Travelers aid desk: 703-572-8296

Parking: 703-572-4500

Lost and found: 703-572-8479

Travel to and From IAD

Transportation Options

Bus

Bus services operate from garage 1, stop 2.

• Fairfax Connector: Local bus routes 952 and 983 serve IAD. Route 952 serves destinations in Reston, Virginia, while route 983 serves the Smithsonian Udvar-Hazy Air and Space Museum.
• Loudoun County Transit Commuter Bus: Services to and from Dale City.
• Virginia Breeze: Intercity service to the Shenandoah Valley, Blacksburg, and Union Station in Washington, D.C.
• Megabus: Services to Union Station and Charlottesville.
• OurBus: Services to Baltimore, Philadelphia, Wilmington, New York City, and beyond.

Metrorail

Passengers can access downtown Washington, D.C., directly from the airport via the Silver Line Metro. The Metro station is approximately a 5-minute walk from the terminal, near parking garage 1 (north). Fares range from $2.25 to $6.25, depending on when you travel, with services operating during these hours:

• Monday through Thursday: 5 a.m. to 12 a.m.
• Friday: 5 a.m. to 2 a.m.
• Saturday: 6 a.m. to 2 a.m.
• Sunday: 6 a.m. to 12 a.m.

Shuttles and Prearranged Transport

Hotel transfers and rental car shuttles operate from the ground transportation level outside of the terminal.

Washington Flyer Taxicabs

Taxis are available 24/7 in the ground transportation area on the lower level (through doors 1 or 7). Fares from the airport to downtown Washington, D.C., are $65 to $75 (excluding tip).

Ride-Hailing Services

Lyft, Uber, and ALTO operate from IAD and may drop off and pick up passengers on the ground transportation level. Drop-off is at zones 3A, 3B, 3G, and 3H, and pickup is from zones 3C to 3F.

Hot Tip:

For more information on ground transportation, check out our article on how to get from Washington Dulles International Airport to Washington, D.C.

Directions by Car to IAD

Arriving From Downtown Washington, D.C.

Take I-66 across the Theodore Roosevelt Bridge and continue on I-66. Keep right at the fork to continue on VA-267 W and follow Dulles Airport/I-495 N/Baltimore signs. Keep left at the fork to continue on Dulles Access Road until you reach Saarinen Circle for access to the terminal. Please note that this route has tolls.

Arriving From Baltimore

Take I-95 S to exit 27 and merge onto I-495 W toward Silver Spring. Use the right 2 lanes to take exit 45A to merge onto VA-267 W and then exit toward Dulles Airport. Stay on Dulles Access Road until you reach Saarinen Circle to access the terminal.

IAD Airport Parking Information

Official Airport Parking

IAD offers convenient airport parking across from the terminal with direct, covered access via walkways. Long-term parking is also available for those looking for the most cost-effective option.

Short-Term Parking

The terminal parking lot is the closest and most convenient option for passengers looking for hourly or daily parking. It is connected to the terminal via an underground pedestrian walkway.

Terminal lot parking fees:

• Hourly: $7
• Daily rate: $32

Parking garages 1 and 2 are a little farther from the terminal parking lot and connect to the terminal via pedestrian walkways. Parking garage 1 is north of the terminal building, and parking garage 2 is west of the terminal. A courtesy shuttle bus is available to transport passengers from the terminal to the parking garages, operating from curb area 2F.

Parking garage fees:

• Hourly: $7
• Daily rate: $21

Hot Tip:

Parking garages 1 and 2 have electric vehicle charging points on level 1.

Long-Term Parking

The economy parking lot is farther north of the airport. Passengers must ride the courtesy shuttle bus from curb 2F. Parking fees are $15 per day.

Curbside Valet Parking 

Valet parking is available from zone 3 on the departures level from 4 a.m. to 10 p.m. Fees are $39 for day 1 and $10 per hour (up to a $39 maximum) for subsequent days.

Hot Tip:

Booking your parking in advance can save you up to 17% on the parking fee.

Pickup and Drop-Off Parking

The cell phone waiting lot is at the corner of Autopilot Drive and Rudder Road and allows visitors to park for free while they wait to pick up a passenger. Visitors may remain for up to 1 hour and must not leave their vehicles unattended.

Off-Site and Hotel Parking

If you’re willing to travel a little farther, airport parking can be booked at external lots and hotels at a lower rate.

Parking at IAD starts at $8 per day when booked with airportparkingreservations.com, and these external parking lots include courtesy shuttles to and from the airport.

Parking for Passengers With Disabilities

Disabled parking is available at all airport parking lots. In the terminal parking lots, spaces are closest to the underground tunnel to the terminal, and in the economy parking lot, they are closest to the shuttle bus stops. All airport shuttles are wheelchair-accessible.

Parking Contact Number

General inquiries: 703-572-4500

Car Rental at IAD Airport

All rental cars are on Autopilot Drive north of the terminal, and courtesy buses shuttle passengers to and from the terminal. Buses pick up and drop off at the ground transportation area stops 2C or 2D.

The following companies are in the rental car center:

Hot Tip:

Avoid excessive rental insurance fees with these credit cards that offer car rental insurance as a benefit.

IAD Airport Hotels

Washington Dulles Airport Marriott is on airport property about 0.5 miles from the terminal building. More hotels are 1 plus miles away and range from 2 to 4 stars.

Top 3 Hotel Stays Using Points

The DoubleTree by Hilton Washington Dulles Airport has plenty of amenities that travelers love. The hotel features a restaurant, a free airport shuttle, a fitness center, and spa. Hilton no longer publishes an award chart, but award nights at the hotel cost an average of 45,000 points per night.

The Westin Washington Dulles Airport is a 10-minute drive from the airport, with a complimentary shuttle for hotel guests. Guests can relax in spacious rooms featuring large floor-to-ceiling windows. The hotel also has a restaurant, a lounge bar, and a fitness center. With meeting spaces and a contemporary lobby designed for socializing or business gatherings, the hotel caters to both leisure and corporate travelers. Members can redeem 29,000 Marriott Bonvoy points for a free night’s stay.

Those who prefer to stay at a Hyatt should be comfortable at the Hyatt Regency Dulles. The hotel offers a complimentary airport shuttle, fitness center, indoor pool, restaurant, and business center. However, the hotel is just a Category 2 property in the World of Hyatt program, meaning award nights cost start at 6,500 points per night, making it an exceptional value for your points.

Final Thoughts

Washington Dulles International Airport serves more direct destinations than any other regional airport, flying to dozens of domestic and international destinations.

In recent years, Dulles has undergone significant upgrades, including the construction of a new, 435,000-square-foot Concourse E with 14 gates, expected to open in 2026 to increase capacity and improve passenger amenities. Additional improvements include new retail and dining concessions, as well as broader long-term expansion plans to accommodate growing passenger demand. Overall, these developments show that IAD is actively evolving to deliver a more efficient and modern travel experience.