Spirit battered by Harvey, then Irma

Spirit has already had a rough 2017, but things are about to get a lot worse. After a costly spate of pilot-related cancellations in May, Hurricanes Harvey and Irma will continue to take a toll on Spirit's results through the remainder of this year. One of Spirit's most important markets happens to be Houston -- ground zero for Hurricane Harvey damage -- which represents roughly 10% of flight volume. In addition, the company's largest market by far is Fort Lauderdale, and Orlando is its third-largest market. Even before hurricane season began, Spirit's year was off to an ugly start. Its Q2 results were negatively impacted by $45m when its pilots stopped volunteering to work overtime, resulting in hundreds of May flight cancellations.<br/>