What Terminal is Frontier Airlines At ORD?

What Terminal is Frontier Airlines At ORD? Frontier Airlines operates out of Terminal 5 at Chicago O'Hare International Airport (ORD). This terminal is primarily used for international flights, but Frontier’s domestic flights also depart from here. Terminal 5 offers a range of amenities, including dining options, duty-free shopping, and services to ensure a comfortable travel experience. Passengers flying with Frontier should check their flight information for specific gate details and arrive early to navigate the terminal efficiently.