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The airline said it expected additional flight delays through Wednesday night “as we work through the issue.”
Aug. 6, 2025, 9:06 p.m. ET
United Airlines grounded flights across the country on Wednesday because of a system outage, and warned that it expected problems through the evening.
“Due to a technology issue, we are holding United mainline flights at their departure airports,” the airline said in a statement around 8:30 p.m. Eastern time. “We expect additional flight delays this evening as we work through this issue.”
Full stops for United’s flights were in place at airports including its hubs in Chicago, Denver, Houston, Newark and San Francisco, according to the Federal Aviation Administration’s website. An agency spokesman directed questions to United.
On social media sites, customers posted reports of being stranded on tarmacs and being told to deplane after boarding. United’s account on X replied to various complaints with comments citing a “system error” and a “tech outage.”
One traveler wrote on social media, “2 hours and counting,” with a video shot out a plane window showing the passenger’s jet and another grounded United airplane.
The tracking site FlightAware reported Wednesday evening that 27 percent of United’s flights for the day had been delayed.
This is a developing story. Check back for updates.
Stacy Cowley is a Times business reporter who writes about a broad array of topics related to consumer finance, including student debt, the banking industry and small business.
