The announcement comes before the busiest travel weekend, Thanksgiving, but the airline assured its customers that the tickets they booked are still active and future fares will also be.

The low-fare carrier has struggled to find its footing after its planned merger with JetBlue was blocked by a federal judge.

Spirit Airlines filed for bankruptcy protection on Monday after several failed merger attempts. But the Broward-based discount airline says travelers shouldn’t worry. “You can continue to book and fly now, and in the future,” the carrier said in a statement on Nov. 18.