Try rebooking your flight. Many airlines have teams devoted to tracking the weather and rearranging flight schedules to avoid bad winter weather. If the weather proves too dangerous for flight, airlines often offer customers the opportunity to rebook their flights to leave earlier or later free of charge, before you leave for the airport. Sometimes, the airlines will even waive fees to rebook customers who see the writing on the wall and call before the bad weather hits. No guarantees, but it's worth a try, said Airfare Watchdog President George Hobica.