Delta flight cancellations being investigated by U.S. Department of Transportation

Feds investigating Delta over flight cancelations

Delta Airlines has canceled hundreds more flights as the company continues to recover from the CrowdStrike outage the week before. Several travelers have been stranded in Los Angeles for days.

The Department of Transportation is investigating Delta Air Lines over flight cancellations related to a global outage caused by a faulty software update last week affecting businesses worldwide.

U.S. DOT Secretary Pete Buttigieg said Tuesday morning that the agency is probing Delta to make sure the company is "following the law and taking care of its passengers during continued widespread disruptions."

Delta is struggling to resume normal services after a worldwide IT outage by cybersecurity firm CrowdStrike on July 19.

"We've been in multiple six hour lines... just trying to get home," said a frustrated Renita Lobo.

She and her kids were in LA on a vacation from Canada, for a family reunion. But, this adventure at the airport? She's had it. "I'm way past my limit!"

Larry and Roberta Williams from Tennessee felt the same way. They were headed for Las Vegas, but have been in Los Angeles for several days waiting to get out.

"A lot of Delta right now is crew scheduling," Roberta said.

In a statement, Delta CEO Ed Bastian said, "Delta has a significant number of applications that use that system, and in particular one of our crew tracking-related tools was affected."

The U.S. Department of Transportation has opened an investigation into Delta Air Lines to ensure the airline is following the law and taking care of its passengers during continued widespread disruptions.

Delta flight delays continue after global tech outage

Delta Air Lines is still struggling to get back on track days after a global tech outage temporarily hindered airline operations.

In a post on "X" transportation secretary Pete Buttigieg wrote, "All airline passengers have the right to be treated fairly, and I will make sure that right is upheld."

For Roberta Williams, "They definitely need to be looked into. They've got to figure out why this has gone on for 4 or 5 days."

In Renita Lobo's case the situation is compounded by the fact her parents are both in the hospital back in Canada. "And I can't even reach my mom who I know needs me. She doesn't even feed herself. So, it's very stressful. My work is affected. I have to take care of the kids. I've registered them for summer camp, daycare... and all that money is just going to waste. I don't think I'll fly Delta again. I do not think I will ever."

As of Tuesday morning, Delta canceled more than 400 flights, representing the most cancellations by any other U.S. airline, according to data from flight tracker FlightAware.

How many flights has Delta canceled since last week's global outage?

The Atlanta-based airline has canceled over 5,500 flights since the outage started on July 19, including at least 700 flights canceled on Monday, according to aviation data provider Cirium. The Associated Press reported that Delta and its regional affiliates accounted for about two-thirds of all cancellations worldwide Monday, including nearly all the ones in the United States.

Buttigieg spoke to Delta CEO Ed Bastian on July 21 about the airline’s high number of cancellations since Friday. Buttigieg said his agency had received "hundreds of complaints" about Delta, and he expects the airline to provide hotels and meals for travelers who are delayed and to issue quick refunds to customers who don’t want to be rebooked on a later flight.

Bastian, the Delta CEO, said in a message to customers Sunday that the airline was continuing to restore operations that were disrupted. One of the tools Delta uses to track crews was affected and could not process the high number of changes triggered by the outage.

"The technology issue occurred on the busiest travel weekend of the summer, with our booked loads exceeding 90%, limiting our re-accommodation capabilities," Bastian wrote. Loads refer to the percentage of seats on each flight that had been sold.

Delta has offered waivers to make it easier for customers to reschedule trips.

The Associated Press and FOX Television Stations national reporter Chris Williams contributed to this report. This story was reported from Washington, D.C.