Officials at Los Angeles International Airport (LAX) are expecting more than 800,000 travelers over the Fourth of July holiday weekend beginning Friday, July 2nd, and extending through Monday, July 5th.

The passenger figure would be an increase of approximately 12 percent over the comparable July 4th holiday weekend last year.

“Passengers will experience congested roadways, crowded terminals and virtually full flights,” LAX officials warned.

Travelers also should expect to see beefed-up security during the July 4th weekend and are urged to allow additional time for passenger and baggage screening.

In some cases, vehicle screening may be required.

The national color-coded terror alert warning system is expected to remain at yellow, which designates an “elevated” risk of attacks.