transfering from international to domestic flight at IAD - Dulles airport

I will be flying from Viennna, Austria to Dulles and then to Savannah.
Our flight from Vienna is operated by Austrian airlines and will arrive a B-gates. Our flight to Savannah is operated by United and will be leaving from D-gates.
I am traveling alone with my son so I will have a stroller that makes it a bit slower/harder to get around.
I am reading different things on different websites and wondering if anyone could advice me how to get from B to D. I know we will have to go through immigration and customs and even collect our luggage and re-check them. Will we have to go through security again? Where is immigration located?

Connected question, but this time we travel the other direction: Connecting flight at IAD Dulles with stroller

Best Answer

At IAD airport, moving between terminals isn’t a big task. After you land, you will take a inter terminal bus (looks like a bus but is actually a vehicle with big wheels that can attach directly to a special gate at the airport so you can just walk in directly) to the main immigration hall. The immigration hall immediately exits into the baggage claim area where you will collect your luggage, go to the departures level right above, recheck everything in, go through the security and then take a train to your connecting terminal. More info can be found at https://www.flydulles.com/iad/international-arrivals

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Do I have to go through security again for connecting flight at IAD?

You have to get off the plane, get through passport control, wait for your bags, clear customs, drop your bags off again, and then go through security and get to your next gate. I did this at IAD a couple months ago with two hours between connections.

How long does it take to go through customs at Dulles?

Passengers are transported to U.S. Customs and Border Protection facilities within 10 to 15 minutes of deplaning their aircraft. Processing times can vary, and customers should expect longer waits during peak travel periods. Most travelers complete the process in less than an hour.

How long of a layover do I need at Dulles airport?

You'll want a layover of at least 7 hours. The easiest way to reach the heart of DC is to hop on the Silver Line Express bus to the Wiehle-Reston metro station, and from there you can ride the silver line metro into the city.

Can you walk between terminals at Dulles?

It is possible to walk the length of each midfield terminal building end-to-end (i.e., there are no barriers between A and B or between C and D), and there is an underground pedestrian walkway connects the main terminal to the A/B midfield terminal.

Washington Dulles International Airport (IAD) – Arrivals, Ground Transport and Metro trains Guide

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