Terminals · Washington · Dulles

IAD terminals & airport map

Washington Dulles International Airport (IAD) has four terminals: Terminals A through D. Here's which terminal your airline departs from, the IAD terminal map, how to get between terminals, and where security is — so you walk in knowing exactly where to go.

Diagram of a typical airport terminal layout — departures level up top, security checkpoints, then concourses branching out to the gates. — How a terminal is usually laid out: ticketing and security up top, with concourses fanning out to your gate below.

IAD TSA wait times todayLive security waits by checkpoint, the forecast, and your Leave-By Time.

How many terminals does Dulles airport have?

Washington Dulles International Airport (IAD) has four terminals: Terminals A through D. Which terminal you use comes down to your airline — check the list below before you leave home.

Which terminal is your airline in at IAD?

Flying out of IAD? Here's the terminal each airline departs from. Tap an airline for its gates, check-in hall, and whether it recently moved terminals.

Airline → terminal assignments verified June 27, 2026against the airport's own sources. Airlines do move terminals — we date every change.

IAD terminal map tap a terminal

IAD · Terminal A

Airlines here

Air FranceEtihadKLMVirgin Atlantic

IAD wait times by terminal

Where is security in each terminal at IAD?

Each IAD terminal has its own TSA checkpoint, and the line can be short in one terminal and long in the next. Before you pick when to leave, check wait times by terminal and head to the fastest open lane. Not sure how long to budget? How long does airport security really take breaks it down by the hour.

How do you get between terminals at IAD?

AeroTrain — Underground automated people mover connecting the Main Terminal with Concourses A, B and C. Concourse D has NO AeroTrain station - reach it by taking the AeroTrain to Concourse C and walking, or via a mobile lounge. A 1,000-ft pedestrian walkway also links the Main Terminal to the A/B gates (and Z gates). Mobile lounges run between the Main Terminal and Concourses A and D and serve hardstand gates and the International Arrivals Building.

What is the minimum connection time at IAD?

Give yourself a real cushion to connect at IAD: about 45–60 minutes for a domestic-to-domestic connection, and 90 minutes or more when international travel or a terminal change is involved. See our full guide to minimum connection time.

Arrivals, departures, and getting around IAD

Departures are usually upstairs. Most IAD terminals put ticketing, bag drop, and security on the upper (departures) level, with baggage claim and pickup below.
Follow your gate, not just your terminal. Inside security, signs point you to gate numbers and concourses — your boarding pass lists both.
Accessibility. Elevators, accessible restrooms, and wheelchair assistance are available throughout; ask your airline ahead of time, or look for TSA Cares if you need extra help at screening.
Picking someone up? Head to baggage claim on the arrivals level — but to catch a flight, everything you need is on the departures side above.

Cheap IAD parking — comparedFind the lot closest to your terminal and fold the shuttle into your Leave-By Time.

Lounges, dining, and shops live inside each terminal past security — handy once you're through, but they shouldn't change when you leave home. Browsing other airports? TSA wait times by airport lists them all.

Common questions about IAD terminals

How many terminals does Dulles airport have?

Washington Dulles International Airport (IAD) has four terminals: Terminals A through D. Which one you use depends on your airline, so check the terminal list above before you head out.

Which terminal is your airline in at IAD?

It depends on the airline. Delta departs from Terminal B; American departs from Terminal B; United departs from Terminals C and D. Tap your airline in the list above for gates, check-in, and whether it recently moved (assignments verified June 27, 2026).

How do you get between terminals at IAD?

AeroTrain: Underground automated people mover connecting the Main Terminal with Concourses A, B and C. Concourse D has NO AeroTrain station - reach it by taking the AeroTrain to Concourse C and walking, or via a mobile lounge.

Where is security in each terminal at IAD?

Each IAD terminal has its own TSA checkpoint, and the wait can differ a lot from one terminal to the next. Check IAD wait times by terminal and head to the fastest open lane.

What is the minimum connection time at IAD?

Give yourself a real cushion to connect at IAD: roughly 45–60 minutes for a domestic-to-domestic connection and 90 minutes or more when international travel or a terminal change is involved.

You know your terminal. Now get the exact minute to walk out your door — built from today's live IAD security wait and your drive.

See your Leave-By Time →

TSA·WAIT·TIMES

Terminals · Washington · Dulles

IAD terminals & airport map

IAD TSA wait times todayLive security waits by checkpoint, the forecast, and your Leave-By Time.

How many terminals does Dulles airport have?

Washington Dulles International Airport (IAD) has four terminals: Terminals A through D. Which terminal you use comes down to your airline — check the list below before you leave home.

Which terminal is your airline in at IAD?

Flying out of IAD? Here's the terminal each airline departs from. Tap an airline for its gates, check-in hall, and whether it recently moved terminals.

Airline → terminal assignments verified June 27, 2026against the airport's own sources. Airlines do move terminals — we date every change.

IAD terminal map tap a terminal

IAD · Terminal A

Airlines here

Air FranceEtihadKLMVirgin Atlantic

IAD wait times by terminal

Where is security in each terminal at IAD?

How do you get between terminals at IAD?

What is the minimum connection time at IAD?

Arrivals, departures, and getting around IAD

Departures are usually upstairs. Most IAD terminals put ticketing, bag drop, and security on the upper (departures) level, with baggage claim and pickup below.
Follow your gate, not just your terminal. Inside security, signs point you to gate numbers and concourses — your boarding pass lists both.
Accessibility. Elevators, accessible restrooms, and wheelchair assistance are available throughout; ask your airline ahead of time, or look for TSA Cares if you need extra help at screening.
Picking someone up? Head to baggage claim on the arrivals level — but to catch a flight, everything you need is on the departures side above.

Cheap IAD parking — comparedFind the lot closest to your terminal and fold the shuttle into your Leave-By Time.

Common questions about IAD terminals

How many terminals does Dulles airport have?

Washington Dulles International Airport (IAD) has four terminals: Terminals A through D. Which one you use depends on your airline, so check the terminal list above before you head out.

Which terminal is your airline in at IAD?

How do you get between terminals at IAD?

Where is security in each terminal at IAD?

Each IAD terminal has its own TSA checkpoint, and the wait can differ a lot from one terminal to the next. Check IAD wait times by terminal and head to the fastest open lane.

What is the minimum connection time at IAD?

Give yourself a real cushion to connect at IAD: roughly 45–60 minutes for a domestic-to-domestic connection and 90 minutes or more when international travel or a terminal change is involved.

You know your terminal. Now get the exact minute to walk out your door — built from today's live IAD security wait and your drive.

See your Leave-By Time →