NEW YORK--(BUSINESS WIRE)-- #creditratingagency--Spirit Airlines Inc. (Spirit), an ultra-low-cost carrier headquartered in Dania Beach, Florida, has filed for Chapter 11 bankruptcy twice in the past year amid ongoing challenges from weak demand, high operating costs, and liquidity constraints. The airline first entered bankruptcy in November 2024 and exited in March 2025, but filed again in August 2025 to pursue a deeper restructuring. Spirit recently reached an agreement with AerCap Holdings N.V. (AerCap) ...