UPDATE: 10 a.m. ET The FAA has lifted the ground stop according to Reuters.
UPDATE: 9:43 a.m. ET United Airlines has issued a response on Twitter.
All United Airlines flights in the U.S. were grounded on Wednesday.
The Federal Aviation Administration issued a ground stop alert at 7:49 a.m. Wednesday morning, saying they were alerted by United of a systemwide issue.
"We experienced a network connectivity issue this morning," a United spokesperson said shortly after 9 a.m. EST. "We are working to resolve this and apologize to our customers for any inconvenience."
The ground stop affects all of United's mainline flights. United Express, the airline's regional partner, has been released from the ground stop, but since most of those flights are connectors to United hubs, they will all likely be impacted by the computer issues. The issue has impacted roughly 3,500 flights thus far, according to the airline.
Reactions on Twitter were immediate:
A similar situation occurred last month when a computer glitch temporarily grounded United's entire fleet.
More details as they develop.
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