What Terminal is Delta Airlines At LAS? Delta Airlines operates out of Terminal 1 at Harry Reid International Airport (formerly McCarran International Airport) in Las Vegas. Terminal 1 is designed to accommodate a high volume of passengers and offers a variety of amenities and services. Passengers flying with Delta Airlines can take advantage of efficient check-in and security procedures, as well as numerous dining options, retail stores, and comfortable seating areas. The Delta Airlines terminal at LAS ensures a smooth and convenient travel experience for all passengers.