Monday travelers at BWI Marshall Airport fared better than weekend flyers, even as the Department of Homeland Security’s funding lapse continued to strain staffing. BWI officials wrote on social media early Monday that security checkpoint A — closest to the check-in stations and concourses for Southwest and American Airlines — would remain closed to start the workweek.

Delays at TSA checkpoints are causing major disruption for travelers. Hartsfield-Jackson Atlanta Airport is advising people to show up 4 hours early.

The DHS shutdown has created travel chaos for flight passengers as a Philadelphia airport closes security checkpoints. Long wait times are reported at major airports amid the crisis.

Footage from the Philadelphia International Airport, shot early Thursday morning, shows hundreds of passengers waiting on elevators and escalators to get through a security checkpoint.