TSA checkpoint changes are now in effect at Pittsburgh International Airport
What percentage increase is this from Independence Day 2023?

The TSA is expecting to screen more than 30 million passengers from June 27 through today, which would be a more than 5-percent increase over 2023 Independence Day.
How early does TSA recommend arriving for morning flights?

The TSA recommends arriving at the airport at least 2 to 3 hours before early morning flights to account for increased wait times due to high passenger volume. This recommendation is in place to ensure travelers have enough time for parking, shuttle transportation, airline check-in, obtaining a boarding pass, and going through the security screening process, which includes screening of carry-on bags1.
What changes occurred at Pittsburgh International Airport's TSA checkpoint?

The TSA checkpoint at Pittsburgh International Airport underwent changes to manage increased passenger volume and reduce wait times. From 4 a.m. to 7 a.m. on weekdays, the alternate security checkpoint is dedicated exclusively to travelers enrolled in TSA PreCheck, while the main checkpoint is dedicated to non-PreCheck passengers. After 7 a.m., a TSA PreCheck lane reopens at the main checkpoint. These changes aim to improve checkpoint efficiency and streamline passenger flow.