The estimated wait time at the standard security checkpoint at the William P. Hobby Airport in Houston early Sunday evening was at one point three hours, according to the Houston Airports website. The Hobby airport on social media Friday said it expected more travelers than normal due to spring break.

In a series of posts Sunday, the airport on X went from urging travelers to arrive early to asking them to arrive 3 to 4 hours before their flights to eventually asking them to arrive 4 to 5 hours early to allow extra time for screening, citing the partial government shutdown.

A statement from Houston Airports, which counts Hobby and George Bush Intercontinental Airport as part of its system, said the shutdown “can impact security operations day-to-day and shift-to-shift.” Wait times at checkpoints at George Bush Intercontinental Airport early Sunday evening were as brief as a few minutes.

Posts on X from Louis Armstrong New Orleans International Airport on Sunday said a shortage of TSA agents at the security checkpoint was leading to “longer-than-average” lines. The airport urged travelers to arrive at least three hours before their flights and said wait times could last up to two hours. It warned similar delays could continue through the coming week.

It’s not immediately clear if the delays in Houston and New Orleans were happening at other airports around the country. Sunday’s longer-than-usual wait times came on top of flight delays in recent days in places like Atlanta due to weather.

Agents with the U.S. Transportation Security Administration are expected to work without pay during the ongoing shutdown of the department, which began Feb. 14. Democratic lawmakers have said DHS won’t get funded until new restrictions are placed on federal immigration operations following the fatal shootings of Alex Pretti and Renee Good in Minneapolis earlier this year.

Chris Sununu, president and CEO of Airlines for America, a trade group for U.S. airlines, in a statement urged Congress and the Trump administration to act.

“We are in spring break travel season and expecting record numbers of people to take to the skies. Airlines have done their part to prepare; now Congress and the administration must act with urgency to reach a deal that reopens DHS and ends this shutdown,” he said. “America’s transportation security workforce is too important to be used as political leverage.”

Jessica Andersen Alexie and her two children, 10 and 13, were among the travelers caught in the long lines at Hobby in Houston as they tried to return home to New Orleans. They had been in Houston for the World Baseball Classic.

Alexie said they arrived 3 hours early to find a long line and realized they would not make their flight. While in line, she checked rental cars to see if driving home might be an option but couldn’t find any available. She was able to rebook for a late-night flight and felt relieved to get through the CLEAR security line after about 3 1/2 hours.

When they finally sat down to eat, she decided to take another look at available flights, on the chance that others in line had to cancel and rearrange their plans, and found three seats on a flight that got her family home Sunday afternoon. When they landed at the New Orleans airport, the line extended out to the parking garage, she said.

“It was nuts,” she said. “It was crazy.”