The end of 2016 will be a busy one at U.S. airports, with the rush expected to spill over into early 2017 as people travel for the New Year’s holiday.

The trade group Airlines for America expects a record 45.2 million passengers from Dec. 16 through Jan. 5. That will cap what's expected to be the busiest year ever for air travel in the United States.

Airports will see a steady rush throughout the holiday period, but peaks won't be the same everywher.