When planning your trip, it is essential to know what terminal is United in Las Vegas. United Airlines operates exclusively out of Terminal 3 at Harry Reid International Airport. Terminal 3 is a modern facility designed to handle a high volume of domestic and international flights, ensuring a smooth and efficient experience for every passenger. With its spacious layout, intuitive signage, and state-of-the-art amenities, Terminal 3 is the hub for United travelers seeking convenience and comfort. https://airportsterminalhub.com/airlines/united-airlines/united-airlines-harry-reid-international-airport-las-terminal/