Pittsburgh International Airport British Airways, and Wow Air. After United Airlines shifted flights from Newark Liberty International Airport to Washington–Dulles at the Wilkes-Barre/Scranton International Airport, Pittsburgh became the last airport in Pennsylvania to have non-stop flights into EWR. Pittsburgh International Airport is the busiest airport in western Pennsylvania and the second-busiest airport in the state, after Philadelphia International Airport. In 2017 it served 8,988,016 passengers. The airport is encircled by I-376 and Business Loop 376, which is the main access for Airport Cargo and Servicing as well as other flight industries. It is owned by the county and operated by the Allegheny County
Washington Dulles International Airport mezzanine with more room for lines. A new train system, dubbed AeroTrain and developed by Mitsubishi, began in 2010 to transport passengers between the concourses and the main terminal. The system, which uses rubber tires and travels along a fixed underground guideway, is similar to the people mover systems at Singapore Changi Airport, Hartsfield–Jackson Atlanta International Airport, and Denver International Airport. The train is intended to replace the mobile lounges, which many passengers found crowded and inconvenient. The initial phase includes the main terminal station, a permanent Concourse A station, a permanent Concourse B station, a permanent midfield concourse station