Holiday travelers at Boston airport during storm

Holiday travelers are seen at Boston Logan International Airport on Friday. With inclement weather expected to hit parts of the U.S., the busy holiday travel season will be impacted. Delta, United and other airlines say they are loosening their change fee policies so travelers can choose new flights and avoid the bad weather.

The weather added uncertainty to what's expected to be a busy travel season. AAA estimates that nearly 113 million people will travel at least 50 miles from home between Dec. 23 and Jan. 2. That's 4% higher than last year.