In 2015, only 1.59 percent of all U.S. domestic flights were canceled, and only about 0.3 percent were diverted to an airport other than the original destination. But though your odds of being canceled are slight, you can face some real hassles if it does happen.

Read more about your rights involving over-booked and cancelled flights on AirFare WatchDog – What Are My Rights if My Flight Is Cancelled?