Serving both domestic and international travel, United Airlines Dulles Office at Washington Dulles International Airport (IAD) serves as a crucial hub in the airline's network. It is situated in the main terminal and offers a wide range of services, including as check-in, luggage handling, ticketing, and customer service, with operations concentrated on Concourses C and D. Self-service kiosks, manned counters, and special assistance for first-class travelers are all features of the office. The lounges of United Club and Polaris provide first-rate facilities like fine dining, offices, and leisure spaces. In addition, the office oversees rebooking services, crew coordination, and flight logistics. The Dulles office is essential to preserving United Airlines' effectiveness, dependability, and first-rate service for passengers globally because it has direct flights to important international locations.  

In addition to an administrative office, United Airlines' presence at Dulles Airport consists of a vast network of customer service counters, ticketing areas, baggage assistance areas, and departure gates that are primarily used for domestic and international operations. The Dulles office serves as the airline's major hub and is essential for flight scheduling, passenger assistance, and preserving the smooth running of United's extensive network.

Concourses C and D house the airline's gates and the majority of its passenger services, while the United Airlines office is located in the Main Terminal of Dulles Airport. United Airlines and United Express run these concourses virtually solely, giving passengers a smooth, cohesive experience. Consequently, the airline can provide both departing and arriving passengers with more reliable service, quicker connections, and more efficient transit. United is able to directly oversee the logistics of hundreds of daily flights, many of which connect passengers to important local cities and major foreign destinations throughout Europe, Asia, the Middle East, and South America, thanks to the establishment of a central office here.

The main terminal building's west side is where United Airlines' ticketing and check-in areas are located. Travelers can use a number of alternatives to finish the check-in process, such as automated self-service kiosks for those who want a quicker, tech-driven experience and classic manned counters for those who require individualized assistance. Check-in, seat selection, luggage tag printing, and even last-minute ticket purchasing are among the many tasks that the self-service kiosks can perform. The airport's infrastructure includes mobile scanning devices and high-speed Wi-Fi, making it simple for travelers with mobile boarding cards to check in and go straight to security.

The United Polaris and Premier Access counters further improve the check-in experience for passengers flying in premium cabins. Business class travelers, MileagePlus Premier members, and Star Alliance Gold members can enjoy an accelerated experience in certain regions. Premier Access enables travelers of elite status to navigate the airport with the least amount of delay by providing priority check-in, security screening, boarding, and luggage handling. A more individualized concierge-style service is offered at the Polaris check-in area, where committed staffers are on hand to help with complicated itineraries, requests for upgrades, or travel interruptions.

The AeroTrain takes passengers to their assigned concourse after they have finished checking in and cleared security at Transportation Security Administration (TSA) checkpoints. The contemporary, roomy concourses C and D are mostly run by United Airlines, guaranteeing a unified brand and level of service. The departure gates are well-marked, and there are enough of lounge places with charging stations and cozy comforts in addition to overhead flight information displays. At Dulles, United's gate agents are prepared to manage a variety of passenger requirements, such as standby travel, upgrades, rebooking, and general information.

A major highlight of United Airlines' services at Dulles is the presence of multiple United Club lounges and the exclusive United Polaris Lounge. The United Club lounges, located in Concourses C and D, provide a relaxing and productive environment for eligible travelers. These lounges offer complimentary snacks, beverages including alcohol, high-speed Wi-Fi, and comfortable seating. Business travelers and frequent flyers benefit from workstations, charging stations, and reading materials. The lounges are staffed by professional hosts who are available to assist with reservations, ticketing changes, and MileagePlus inquiries.

The United Polaris Lounge, available to international business class passengers flying on long-haul routes, offers an even more luxurious experience. This premium space includes chef-inspired dining, a full-service bar, spa-like shower suites, and rest areas designed for comfort and privacy. It reflects United’s emphasis on delivering an elevated pre-flight experience for premium passengers departing from its global gateway hubs like Dulles.

In addition to these premium lounges, United Airlines provides extensive baggage services at Dulles. The baggage claim areas are located in the lower levels of the main terminal and are supported by a team of United staff members who assist with lost luggage, damage reports, and baggage delivery services. For passengers with oversized or special baggage such as sports equipment or musical instruments, designated counters and oversized drop points are available. The office works closely with airport baggage handling systems to ensure timely and secure transport of all checked items.

United Airlines also operates a dedicated customer service center within the terminal to handle a wide range of passenger concerns. This service desk provides assistance with missed connections, flight changes, involuntary rebooking, and travel disruptions caused by weather or mechanical issues. Agents are empowered to issue vouchers, reassign seats, and accommodate travelers with special needs or medical conditions. In addition, multilingual support is available for international travelers, ensuring that assistance is accessible regardless of language barriers.

Dulles Airport's infrastructure, in coordination with United Airlines Dulles Office in USA, also supports passengers with disabilities through its accessibility program. Wheelchair assistance, accessible boarding bridges, and trained personnel are available upon request. Service animals are accommodated throughout the terminal, and dedicated relief areas are located near United’s operational gates. Visual paging, TTY phones, and other assistive technologies are in place to ensure that all passengers, regardless of ability, can navigate the terminal comfortably.