IAD - Dulles International Airport Guide

Washington Dulles Airport is the busiest airport in the Washington metropolitan area, and second busiest airport in the larger Baltimore–Washington metropolitan area (after BWI Airport) with over 22 million passengers a year, and one of United Airlines' two East Coast hub airports. With nearly all of the international passenger traffic in the Washington-Baltimore region, Dulles is the busiest international airport in the Mid-Atlantic outside of the New York metropolitan area.  On a typical day, more than 60,000 passengers pass through Washington Dulles to and from more than 125 destinations around the world.