Transportation in Washington, D.C. via Washington Metro. The airport is conveniently located near to the downtown area; however, it has somewhat restricted flights to airports within the United States because of noise and security concerns. Most major international flights arrive and depart from Washington Dulles International Airport , located west of the city in Fairfax and Loudoun counties in Virginia. Dulles is the second busiest international gateway on the Eastern Seaboard. It is the Washington region's second busiest airport in terms of passengers served. Dulles offers service from several low-cost carriers including JetBlue, although the low-cost selection decreased greatly when Independence Air (which was
London City Airport Authority. London City Airport has a single long runway, and a CAA Public Use Aerodrome Licence (Number P728) that allows flights for the public transport of passengers or for flight training (but only for training necessary for the operation of aircraft at the airport). Only multi-engine, fixed-wing aircraft with special aircraft and aircrew certification to fly 5.5° approaches are allowed to conduct operations at London City Airport. The largest aircraft which can be used at the airport is the Airbus A220-100. London City served over 4.5 million passengers in 2017. It is the fifth-busiest airport in passengers and aircraft movements