*Update: United Airlines flights are no longer grounded, but delays remain
The Federal Aviation Administration says the United ground stop has been lifted.
The computer system suffered a technical glitch, causing a ripple effect of heavy delays throughout major airports.
About 3,500 flights were being affected with delays could reach 235 domestic and 138 international destinations.
Original story: United Airlines has grounded all flights in the U.S. Wednesday due to a massive computer glitch, according to FAANews
The Federal Aviation Administration said that United Airlines flights in the U.S. have been grounded due to automation issues.
An airline spokesman said it had experienced a “network connectivity issue” this morning, and that it is working to resolve the glitch.
“We experienced a network connectivity issue this morning,” United confirmed in a statement after 9 a.m. “We are working to resolve this and apologize to our customers for any inconvenience.”