Get ready for the Thanksgiving travel-rush. The TSA projects this year will be the busiest Thanksgiving for air-travel ever. The rush is expected to start early on the Friday before Thanksgiving, but the busiest day will probably be the Sunday after Thanksgiving when everyone is returning home. Related Content: Amtrak upping rail service for Thanksgiving travel The TSA expects to screen more than two and a half million people a day. That’s 25 percent more people than a normal day.