Spirit Airlines Files for Bankruptcy

Spirit Airlines, whose approach to selling cheap tickets without amenities earned it fans and detractors, filed for bankruptcy protection on Monday after a string of setbacks, most recently a failure to renegotiate its looming debt.

The airline, whose last annual profit was in 2019, has had trouble finding its footing after a federal judge blocked a planned merger with JetBlue Airways in January. Spirit has also struggled to capitalize on the recovery from the pandemic because of intense…