Spirit Airlines, founded in 1980 and operating as an ultra-low-cost carrier, has grown to a fleet of 187 aircraft as of 2024. The airline operates more than 600 daily flights, serving over 75 destinations across the U.S., Latin America, and the Caribbean. Spirit primarily uses a hub-and-spoke model with major bases in Fort Lauderdale, Orlando, and Detroit, among others. As of 2024, the airline employs approximately 3,000 pilots and continues to expand its fleet with a focus on the Airbus A320 family, including the A321. Known for its low-cost fares, Spirit maintains a highly competitive position in the market by offering a no-frills experience, with additional services available for purchase. The airline has seen significant growth over the years, becoming one of the largest budget carriers in North America. Spirit Airlines filed for chapter 11 bankruptcy on November 18th, 2024. The airline has suspended pilot hiring amidst its bankruptcy and engine problems with their A320neo aircraft.