JetBlue Airways Corp (JBLU.O), the fifth biggest U.S. airline by passengers carried, consistently cancels flights sooner than rivals when storms pummel the U.S. Northeast, a tactic that may help its customers reach destinations more reliably, a Reuters analysis of flight data shows. Scrapping some flights hours ahead of a storm lets an airline re-allocate planes and crew earlier, meaning fewer flights and passengers canceled in total as a storm passes.