LOS ANGELES (CBSLA.com) — Severe weather across the nation could threaten holiday travel on one of the busiest travel days of the year.

Los Angeles International Airport officials say nearly 3 million passengers are expected to pass through this holiday season.

READ MORE: 2 Hospitalized After Police Shooting Erupts At Scene Of Separate Shooting In Riverside

Around 11 a.m., there were only significant delays out of LAX to San Francisco and Philadelphia, but officials say conditions could likely get worse throughout the day.

“Things here at LAX will be great this morning, that’s why I always fly very early, but as the day goes on that’s when things start to stack up, that’s when flights start to stack up and that’s when delays can really start to impact passengers in their travels,” LAX Media Relations Director Mary Grady said.

READ MORE: 'I Was Desperate': Prince Harry And Meghan's Bombshell Interview

Despite expected delays, new TSA guidelines aim to make the process quicker.

“Tens of thousands of people are receiving expedited screening every day, so passengers should look at their boarding pass to identify whether or not they are TSA pre-check,” Nico Melendez from TSA said. “Passengers 75 and older and 12 and under won’t have to remove their shoes or take their outer coat off or take their laptop out of their bag. Members of the military can go through expedited screening.”

Officials recommend travelers check the status of their flight before leaving home and give themselves plenty of time in case of delays.

MORE NEWS: Team LeBron Wins NBA All-Star Game 170-150

Sign up for mobile alerts or check the status of your flight here.