Spirit Airlines plane at Fort Lauderdale. Pedro Portal/Miami Herald/Tribune News Service via Getty Images Spirit Airlines has filed for bankruptcy protection twice in less than a year. The budget airline now says it will reduce its fleet to fewer than 80. It once operated over 200. Spirit says it will focus on its strongest routes: Fort Lauderdale, Orlando, Detroit, and New York. US budget carrier Spirit Airlines says it is downsizing its fleet by almost two-thirds. The Florida-headquartere...