With Memorial Day weekend upon us and an estimated 2.5 million people flying this weekend, chances are you'll have to deal with long security lines. But the TSA says it's moving to soon pick up the pace. NY1's Michael Herzenberg filed the following report.

To get to your Memorial Day destination, wherever it may be, you'll have to deal with long Transportation Security Administration (TSA) security lines. The long lines have been blamed for thousands of people missing flights.

"So our advice to people is just like if you're preparing to go drive down the shore: plan for it," TSA spokesperson Lisa Farbstein said.

The TSA is telling passengers to arrive at the airport two hours before domestic flights and three hours before international trips.

Getting on the pre-check will speed you through with a background check and fingerprinting good for five years.

The TSA launched the program in 2011 at a cost of $85 and made staffing cuts, thinking more people would sign up.

Farbstein: We have several thousand fewer TSA officers now than we did previously, and we're going to be screening 100 million more passengers. So yeah, that's going to take more time to wrap up.

Herzenberg: So things are going to get worse is what you're saying?

Farbstein: No, we're taking these steps.

After pressure from Congress and the removal of the head of TSA's security, the agency announced this week that it will hire more than 750 screeners in June at the nation's biggest airports.

"That takes time to hire and train," Farbstein said. "But for the immediate relief we've been able to convert part-time officers to full-time officers and offer our officers overtime."

The agency maintains that its reorganization efforts have made a difference. The lines at LaGuardia's Delta terminal, where the media were invited, were minimal.

"It's a good thing we got here three hours early," one commuter said, looking at the lines.

Delta says it hired staff to support TSA and shortened the waits.

Officials say plan in advance. Put the items in your pockets into a carry-on bag before you get to the bins and follow the 3-1-1 rule: carry-on liquids need to be under 3.5 ounces in a one-quart-size plastic bag and in one bin for screening.