What Terminal is Spirit Airlines at ORD? Spirit Airlines operates primarily from Terminal 3 at Chicago O'Hare International Airport (ORD). This terminal provides modern amenities, including dining options, retail stores, and comfortable seating areas to enhance the passenger experience. Travelers flying with Spirit Airlines can check in at designated counters within Terminal 3 or use the self-service kiosks for added convenience. The terminal also offers easy access to security checkpoints and boarding gates. For updated flight information, passengers should check Spirit Airlines' website or O'Hare's flight status board.