Being one of the busiest airports of the country makes Dulles International airport subject to tedious security procedures outlined and adhered to by the TSA. These procedures involve mostly all the traditional practices followed by major domestic or international airports, and passengers are strictly required to review the terms beforehand and closely adhere to the rules.
TSA recommends passengers to be at their respective departure terminals at least two hours before their domestic flights and three hours before international flights. Passengers are asked to remove all metal-made belongings or electronic devices from their carry-on bags and place them in a particular bin to undergo security scanning. At the same time, they go through a metal detector body scanner. Depending on the decision of TSA officers, passengers might be asked to remove their shoes or might be pat-down for additional screening.
All passengers, traveling domestic or international flights, are legally required to present valid identification and the boarding gates. For domestic flights, a driver's license or state-issued ID card is accepted. However, most of the international flights will require passengers to carry a valid passport at security checkpoints, ticket counters, or boarding gates. Make sure to bring your ID with you at all times and keep it close.
At the Dulles International Airport, there are three TSA checkpoints: Door 13 East, Door 4 West, and TSA Pre-checkpoints are located between East and West all are accessed from the departures- ticketing/ check-in level.
Dulles International Airport has three terminals that go through the Z gate, and all of them are connected.
Terminal 1 departure level for ticketing and check-in, there are four ticketing counters, and all of them are for domestic and international flights.
Departing areas are easily accessible by walking or moving walkways after passing through the relevant security checkpoints.