Washington Dulles International Airport (IAD/KIAD)

 draw only border, international airport

Airport Code IAD
Named after John Foster Dulles
www.globalair.com/airport/airport.aspx?aptcode=KIAD

Terminals
The signature Dulles main terminal houses ticketing, baggage claim, US Customs and Border Protection, the Z gates, and other support facilities. From here passengers can take mobile lounges to their concourses, "plane mates" directly to their airplanes, or take the passenger walkway to concourse B. The plane mates are also used to transport passengers arriving on international flights directly to the US Customs and Border Protection inspection centre located in the main terminal.

Mobile lounges
Dulles is one of the few remaining airports to use the mobile lounge system for boarding and disembarkation from aircraft. The "lounge" consists of a 54-by-16-foot carriage mounted on a scissor truck, capable of carrying 102 passengers. They were designed by the Chrysler Corporation in association with the Budd Company. The conveyances are sometimes nicknamed "moon buggies" for the similar appearance of their tires with those of the Lunar Rover.
The "Plane Mate" is an evolutionary variation on the concept. They are similar in appearance to mobile lounges, but can raise themselves on screws to "mate" directly with an aircraft. This allows passengers to deplane directly aboard and be carried to the main terminal.
The Airport Authority has begun to gradually phase out the mobile lounge system for inter-terminal passenger movements in favor of AeroTrain, an underground people mover which currently operates to Concourses A, B and C, and a pedestrian walkway system (now in service to concourse A/B). The plane mates are still used to transport passengers to the D terminal. Plane mates will also remain in use to disembark international passengers and carry them to the International Arrivals Building, as well as to convey passengers to and from aircraft on hard stand (i.e., those parked remotely on the apron without access to jet bridges).
The MWAA plans to retire the mobile lounge system altogether in favor of an underground people mover and pedestrian walkway system (now in service to concourse B), as part of a major engineering program that will also add a concourse to the main terminal and give the airport a fourth runway. This construction is taking place under the D2 Dulles Development program, in which 12 additional gates will be added to Concourse B, as well as a 315 foot tall control tower built one mile south of the current ATC tower, set to be operational in 2006. In addition, a new Concourse C will be constructed, and plans for an additional fifth runway are underway.

Main terminal

The main terminal is a very well regarded building; its roof is a suspended catenary providing a wide enclosed area unimpeded by columns. It was recognized by the American Institute of Architects in 1966. It houses ticketing, baggage claim, and information facilities, as well as the International Arrivals Building for passenger processing.

Although still very elegant, the increase in low-cost carriers has caused extremely long security checkpoint lines to develop and they now plague the once spacious ticketing area. During busy travels seasons, the checkpoint line can wrap around the entire ticketing area. In these cases, getting from the end of the line to the front can take anywhere from 45 minutes to 1 hour and 30 minues.

There are two sets of gates in the main terminal. They are waiting areas for airlines which lack permanent physical gates and therefore use Plane Mates. There are also the recently-opened "Z" Gates, which provide service for Frontier Airlines.

Midfield Terminals
There are three midfield terminal buildings: One contains the A and B Midfield Concourses, another the C and D Midfield Concourses, and the last the G Midfield Concourse. The C and D Concourses, completed in 1983, were designed to be temporary. Their replacements are under development. The A and B Concourses are the first of the permanent Midfield Concourses.

As of 2020, the following airlines provide non-stop scheduled passenger service from Dulles:
Concourse A
Aeroflot: Moscow-Sheremetyevo
Aeroméxico: México
Air France: Paris-Charles de Gaulle
Avianca: Bogotá (connecting service to La Paz)
Copa Airlines: Panamá
Emirates: Dubai
Etihad Airways: Abu Dhabi
Icelandair: Reykjavík
KLM: Amsterdam
Korean Air: Seoul
Qatar Airways: Doha
Saudia: Jeddah, Riyadh
Virgin Atlantic Airways: London-Heathrow

Concourse B
All Nippon Airways: Tokyo-Narita
American Airlines: Dallas, Los Angeles, Miami
Austrian Airlines: Vienna
British Airways: London-Heathrow
Brussels Airlines: Brussels
Cayman Airways: Grand Cayman (seasonal)
Delta Air Lines / Delta Connection: Atlanta, Detroit, Minneapolis/St. Paul, New York-JFK, New York-LaGuardia, Cancún (seasonal)
Ethiopian Airlines: Addis Ababa
Lufthansa: Frankfurt, München
Scandinavian Airlines: Copenhagen
South African Airways: Dakar (connecting service to Johannesburg)
Southwest Airlines: Atlanta, Denver, Orlando
TACA Airlines: San Salvador
Turkish Airlines: İstanbul
Alaska Airlines: Los Angeles, San Francisco, and Seattle/Tacoma

Concourses C and D are used exclusively by United Airlines and United Express for their domestic and international services. (Note: some domestic United flights depart from Concourse A in high traffic periods.)
United / United Express: Domestic and/or pre-clearance: Albany, Albuquerque, Altoona, Aruba, Atlanta, Austin, Beckley, Binghamton, Boston, Buffalo, Burlington, Charleston (SC), Charleston (WV), Charlotte, Charlottesville, Chicago-O’Hare, Cincinnati, Clarksburg, Cleveland, Colorado Springs, Columbia, Columbus, Dallas, Dayton, Denver, Detroit, Dublin, Fayetteville, Fort Lauderdale, Grand Rapids, Greensboro, Greenville, Harrisburg, Hartford, Honolulu, Houston-Intercontinental, Huntsville, Indianapolis, Jacksonville, Johnstown, Kansas City, Knoxville, Las Vegas, Lewisburg, Los Angeles, Louisville, Miami, Minneapolis/St. Paul, Montréal, Morgantown, Nashville, New Orleans, New York-JFK, New York-LaGuardia, Newark, Norfolk, Oklahoma City, Orlando, Ottawa, Philadelphia, Phoenix, Pittsburgh, Portland (ME), Portland (OR), Providence, Raleigh, Richmond, Roanoke, Rochester, Sacramento, St. Louis, St. Thomas, Salt Lake City, San Antonio, San Diego, San Francisco, San Juan, Savannah, Seattle, State College, Staunton, Syracuse, Tampa, Toronto-Pearson, Tulsa; seasonal service to Fort Myers, Halifax, Myrtle Beach, Québec, Vancouver
International: Amsterdam, Beijing, Brussels, Cancún, Dubai, Frankfurt, Geneva, Grand Cayman, Guatemala, Kuwait, London-Heathrow, Manchester, México, München, Paris-Charles de Gaulle, Roma, San José, San Salvador, São Paulo, Sint Maarten, Tokyo-Narita, Zürich; seasonal service to Montego Bay, Punta Cana

“Z” gates, Main Terminal
Frontier Airlines: Austin, Denver, Las Vegas, Orlando;
Seasonal service to San Antonio