After several days of long lines and travel disruptions at Baltimore-Washington International Thurgood Marshall Airport, travelers arrived to a largely calm scene Monday morning.

If you’re headed to the airport, here’s what you need to know.

What’s the wait time? Wait times are under 10 minutes at security checkpoints as of 8 a.m. BWI Airport officials continue to recommend people arrive three hours ahead of their flight.

Wait times could fluctuate throughout the day. Screens near security lines that normally show wait times just read: “We are experiencing longer than normal wait times.”

Which checkpoints are open? Checkpoints A, B, C and D/E are open, including lines for TSA PreCheck and Clear.

Your airline matters. Concourses A, B and C — serving American and Southwest Airlines — have seen security lines snake around the inside of the airport and spill out onto the sidewalk.

Concourses D and E — serving Delta, United, Frontier and other airlines — have a separate security checkpoint. This checkpoint has largely seen normal to no wait times.

TSA pay may be coming

Thousands of Transportation Security Administration workers have gone without pay for more than five weeks amid the partial government shutdown.

More than 500 workers have quit, according to the Department of Homeland Security, and more than 30% of BWI’s TSA workers called out on Friday and Saturday.

President Donald Trump signed an executive order Friday to pay TSA workers as soon as Monday, though it’s unclear how quickly travelers will see an impact.

The TSA staffing issues, combined with an increased number of people traveling for spring break, have resulted in epic lines.

Over the weekend, Immigration and Customs Enforcement officers were deployed at BWI to provide “operational support,” according to the Maryland Aviation Administration.

Maryland Gov. Wes Moore said on social media that the ICE agents are there only to speed the security clearance process, not for immigration enforcement.

ICE officers remained at the airport early Monday. At checkpoint B, an ICE officer helped passengers put their carry-on bags through screening machines.

What to do if you miss a flight

The quickest way to get rebooked is by calling the airline directly, standing in line to speak with a representative or trying the reservations number for assistance, said Vikram Seshadri, a travel advisor. This could mean another long wait once you’ve made it through security to speak with an airline worker at a gate desk to try and rebook or fly standby on a later flight.

During some of the busiest times last week, Southwest Airlines – which accounts for about 70% of air traffic at BWI – had employees walking along checkpoint lines to offer assistance.

“If a customer is unable to make their flight due to longer than normal TSA wait times, we will rebook them on the next available flight without additional charge,” Chris Perry, a spokesperson for Southwest, said last week.

The Associated Press contributed to this report.