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United Airlines operates out of several terminals at Newark Liberty International Airport (EWR) in New Jersey, depending on the type of flight and destination. For domestic flights, United Airlines uses Terminal C, which is the largest terminal at EWR and has three concourses (C1, C2, and C3) connected by a pedestrian walkway. For international flights, United Airlines Terminal at Newark Airport C, but has a separate section called Terminal C-3, which is dedicated to flights to and from Europe, Asia, and Latin America. It's always a good idea to check your itinerary or contact United Airlines customer service to confirm which terminal and concourse you should go to for your specific flight.