If holiday air travel seemed especially busy this year, the numbers add up.

The Transportation Security Administration on Monday said it recorded its busiest day of air travel ever on Sunday, with the federal agency screening more than 2.9 million passengers at airports nationwide.

Historically, the three busiest travel days in the year are the Tuesday and Wednesday before Thanksgiving and the Sunday after, the TSA has said.

The agency had anticipated this holiday season to be its busiest ever, with 2023 already seeing seven of the top 10 busiest travel days recorded.

The prior record was set on June 30, when the TSA reported screening 2.8 million people in a single day. The next highest number, which was just 1,869 people fewer, was on Dec. 1, 2019.

The TSA has said that it anticipates Tuesday and Wednesday this week will be almost as busy as Sunday, with an estimated 2.6 million passengers likely screened on Tuesday and 2.7 million passengers on Wednesday.

It has advised passengers to arrive two hours before scheduled flight departures to have enough time for parking, checking in baggage and completing the security screening.