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.

Spirit Airlines filed for bankruptcy protection Monday after the company struggled with a long run of quarterly losses, failed mergers and looming debt, but it plans to keep flying. Spirit's troubles deepened after the collapse of its $3.

Budget airline Spirit Airlines filed for bankruptcy protection Monday after struggling with declining sales prompted by the COVID-19 pandemic and failed merger attempts. The company estimated its assets and liabilities as between $1 billion and $10 billion, according to a court filing.