One of the most common questions for Las Vegas travelers is What terminal is Spiri...nes at Harry Reid Airport. Operating out of Terminal 1, which is built to handle a high passenger traffic with prompt service and obvious signage, is Spirit Airlines. Restaurants, bars, and mobile check-in stations are just a few of the many amenities it offers. Additionally, Terminal 1 has easy access to ground transportation and baggage claim. Knowing which terminal at Harry Reid Airport is used by Spirit Airlines helps expedite and improve your departure experience, particularly during peak travel times. To allow for security screening, arrive early.