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

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.

Miramar-based Spirit Airlines announced Monday that it's filed for Chapter 11 bankruptcy to restructure its operations amid $2.5 billion in pandemic-related losses and rising competition.