Spirit Airlines is based at Chicago O’Hare International Airport (ORD), Terminal 3. Travelers on Spirit flights can use the terminal’s amenities, check in, and drop off their bags. The Spirit Airlines ORD Terminal has convenient dining options, retail stores, and seating places to ensure a comfortable travel experience. For a more seamless journey, Spirit Airlines advises customers to check in online and adhere to its rules, so make sure to arrive early. For any updates, check the flight updates at the gate.