Frontier Airlines serves from Terminal 5 at Chicago O'Hare International Airport (ORD Frontier Airlines ORD Terminal is the international terminal, however it also serves domestic flights for a few airlines. It provides a variety of amenities, such as dining, shopping, and seating areas. Frontier passengers may expect basic check-in counters and speedy security procedures designed specifically for low-cost carriers. The terminal is well-connected via shuttle services and the airport's internal train system, making it simple to move between terminals.