Despite a stay-at-home order across much of California and a plea from health officials to refrain from traveling amid the worst surge of the novel coronavirus to date, many people are still flying in and out of Los Angeles International Airport.

In an effort to make travel as safe as possible, LAX opened an on-site rapid coronavirus testing site Thursday.

Justin Erbacci, chief executive of Los Angeles World Airports, said the airport supports the health advisories that are in place. “But we know that there are people who are traveling, and there are people who have essential travel,” he said. “We want to have this place to help those people who are traveling travel more healthy and safe.”

Fliers who book an appointment in advance at the recently built lab, located across from Terminal 6, will receive results in three to five hours. The lab, located in a shipping container, is processing about 250 to 300 rapid tests a day, with plans to ramp up to 1,000.

Additional testing sites are at Terminal 2 and Tom Bradley International Terminal, which will provide results in 24 hours.

The tests, known as PCR tests, are administered with a nasal swab. Each costs $125, and results are provided electronically. Appointments are strongly encouraged for all three sites, but rapid testing appointments are filling up particularly fast, Erbacci said.

A trio of interim testing sites opened at the airport in mid-November, providing results within 24 hours. About 14,000 tests have been administered across those sites.

The airport plans to roll out rapid antigen testing in about a week, officials said.

Although coronavirus testing is not a prerequisite to fly out of LAX, some destinations — including Hawaii — do require negative PCR tests before traveling. Erbacci said the on-site testing at LAX is a convenient means to facilitate travel to those destinations.

Other airports — and some airlines — are also testing passengers. Tampa International Airport in Florida began offering testing to all arriving and departing passengers on a walk-in basis in October and on Thursday announced the program would be extended into the new year, anticipating testing to continue for several more months.

Carriers including United Airlines, American Airlines, Hawaiian Airlines, JetBlue Airways and Alaska Airlines are offering either testing kits mailed to a passenger’s home or rapid tests taken at or near airports.

Although local airports saw steady increases in travelers determined to spend the Christmas holiday with family and friends, travel did not increase as much as officials predicted.

Air travel from Dec. 17-29 was around 30% of what it was during the same period last year, said Heath Montgomery, a spokesman for LAX. That fell short of the amount airport officials predicted in November, when they estimated passenger totals during that time would be about 50% of last year’s tally.

Travel declined during the first two weeks of December, following an uptick before Thanksgiving, Montgomery said.

The numbers picked up again later in the month, with Dec. 23 marking the second-busiest day of the year — trailing the Friday before Thanksgiving. The pre-Christmas travel date saw just over 43,000 passengers at security checkpoints at LAX, about 40% of the airport traffic on the same day last year.

The latest coronavirus surge and the new stay-at-home order, which was recently extended for Southern California, “suppressed what it could have been,” Montgomery said of the number of travelers.