The Main Terminal (Concourse B) at Pittsburgh International Airport (PIT) is the proud home of United Airlines, a top international airline. United Airlines Pittsburgh International Airport provides dependable and effective travel services to a wide range of domestic and international destinations. United Airlines passengers can enjoy expedited check-in procedures, easy access to security checks, and a variety of facilities at PIT, including as dining options, retail stores, and cozy waiting areas. United Airlines at Pittsburgh International Airport guarantees a smooth and convenient start to your trip, whether you're traveling for business or pleasure.