What Terminal Is United Airlines At Newark at Newark Liberty International Airport serves as United Airlines' main hub and is where the carrier is based. With roomy check-in sections and cutting-edge self-service kiosks that expedite checking in procedure, this contemporary terminal was created with the convenience of its patrons in mind. With obvious signs pointing passengers to gates, restaurants, and retail establishments, the terminal's design guarantees simple navigation. With so many amenities to improve the whole travel experience, Terminal C is a great place to start both local and international flights. For travellers flying with United Airlines, Terminal C offers a friendly and organised interior with plenty of space.