Spirit Airlines has filed for Chapter 11 bankruptcy protection, the company announced Monday morning.

Years of losses and two failed mergers have caused the ultra-low-cost carrier’s stock price to tumble 92% in the past year. But Spirit says it will bounce back.

Spirit said it expects to operate as normal as it works its way through a prearranged Chapter 11 bankruptcy process and that customers can continue to book and fly without interruption. All tickets, credits and loyalty points remain valid, the airline said, as are affiliated credit cards and other membership perks.