LOS ANGELES (KABC) -- Dozens of flights at Los Angeles International Airport were delayed Monday morning as the nation continues to see a wave of cancellations sparked by the busy Juneteenth holiday.
As of 8 a.m., 12 flights at LAX had been canceled and 49 others were delayed.
Given that the long summer weekend due to Juneteenth - which also coincided with Father's Day - that means there was a lot of travel going on.
The Friday before Juneteenth clocked in as the most popular air travel day of 2022, according to statistics from the Transportation Security Administration. Airports haven't been that crowded since Thanksgiving 2021.
TSA officers said they screened about 2,438,784 people at airport security checkpoints nationwide on Friday, the highest checkpoint volume since November 28, the Sunday after Thanksgiving.
That also was about 100,000 more travelers than the Friday before Memorial Day weekend.
While Juneteenth became an official holiday last year, this is the first year that the US stock market and banks will close in its honor.
The surge in numbers couldn't have come at a worse time for US airlines.
A combination of rough weather, staff shortages and infrastructure challenges have left major carriers struggling to keep up with the surge in travel.
Nearly 9,000 flights were delayed within the US Friday and another 1,500 flights were canceled according to the data group FlightAware.
There were more than 850 flight cancellations Saturday, per FlightAware. By early Sunday morning there were already more than 600 flights canceled for the day. The increase in delays and cancellations comes just one day after Transportation Secretary Pete Buttigieg met with airline CEOs to discuss ways to improve performance and operations ahead of another expected surge in travel over the 4th of July holiday.
About 2,700 flights were canceled over Memorial Day weekend. Major airlines already are preemptively canceling more flights just as the busy summer season heats up.
Southwest Airlines has cut nearly 20,000 flights between June and Labor Day and is struggling to hire the 10,000 new workers it says it needs to meet demand.
"I go through the Whataburger drive-thru and I pay and get my bag, and stapled to the bag is a job application," Southwest CEO Robert Jordan joked to the Dallas Morning News last year about the difficulty in finding job applicants. "That's what it's come to."
Delta said it will cancel 100 daily flights in the US and Latin America from July 1 to August 7. In an open letter to customers, Delta pilots wrote that the labor shortage has put them on pace to fly more overtime hours this year than in all of 2018 and 2019 combined.
"The pilot shortage for the industry is real, and most airlines are simply not going to be able to realize their capacity plans because there simply aren't enough pilots, at least not for the next five-plus years," United Airlines CEO Scott Kirby said during the airline's quarterly earnings call in April.
Unions representing pilots at Delta, American and Southwest say that airlines got themselves into the current situation by refusing to replace pilots who retired and took leaves of absence during the height of the pandemic when air travel plummeted.
About 8,000 new commercial pilots have received certificates in the last year, according to pilot unions, and they say there shouldn't be a shortage. The current service cut narrative, they claim, is being used by companies to justify a cut to training and safety requirements that will boost profit margins.
Some US senators are taking note. "While some flight cancellations are unavoidable, the sheer number of delays and cancellations this past weekend raises questions about airline decision-making," wrote Senators Richard Blumenthal and Edward Markey in a letter to Buttigieg earlier this month.
CNN contributed to this report.