Spirit Airlines is an ultra-low-cost airline based in the United States and offers scheduled service throughout Latin America, the Caribbean, and the United States. In addition to being the biggest ultra-low-cost airline in North America, Spirit was the seventh-largest passenger airline. It serves 80+ destinations across 18 countries within the U.S., plus select international locations. It has crew bases in Atlanta, Chicago-O’Hare, Detroit, Fort Lauderdale, Houston-Intercontinental, Las Vegas, Dallas/Fort Worth, Miami, Newark, and Orlando. The low-cost airline offers inexpensive base fares with optional extras such as luggage, seat selection, and in-flight food. Check out the full list of Spirit Airlines offices at WhereAirlinesAre.