Hi! Traveling through the United Airlines IAD Terminal is seamless and hassle-free. United's business is done mostly in Terminal 1 with much dining to choose from, comfortable seating, and convenient connections. The Polaris Lounge is a highlight for premium passengers, and the airport train system assists with speedy travel. Although some of the gates take a shuttle trip to access, the terminal is efficient and well-organized. Whether you're flying domestically or internationally, United Airlines  offers a smooth and comfortable ride. An excellent hub for United travelers!