The Transportation Security Administration said that although Thursday had the most flights scheduled, it was anticipating higher passenger volumes through its checkpoints on Friday.

“The peak travel day will be Friday, June 28, when the agency expects to screen more than 3 million individuals,” a statement from the agency said. “TSA is staffed to meet its wait time standards, which are 10 minutes and under in TSA PreCheck lanes and 30 minutes and under in standard screening lanes. Seven of the top 10 busiest travel days ever have occurred over the past month.”

Since its founding, the TSA has yet to screen 3 million or more passengers in a single day across the nation’s airports.