• United Airlines grounded all mainline flights nationwide due to a technology issue.
• The disruption led to over 1,000 delayed flights across major hubs.
• The Federal Aviation Administration issued ground stops specifically for United flights.
• The issue has been resolved, but residual delays are expected for the following days.
• United Airlines has confirmed it is not a cyberattack and is treating the delays as controllable.

On August 6, United Airlines temporarily grounded all of its mainline flights nationwide due to a technology issue affecting its weight and balance calculation system. The airline confirmed that all mainline operations, including flights from major hubs like Chicago, Denver, Newark, and San Francisco, faced disruptions while stating, "Safety is our top priority, and we’ll work with our customers to get them to their destinations,” according to ABC News, HuffPost, and NPR.

The disruption led to significant delays, with reports indicating that around 35% of all United flights were delayed and 7% canceled on the day of the incident. Flight tracking data showed that by the end of the evening, 870 flights were delayed, as outlined by Reuters, India Times, and LA Times.

Despite resolving the underlying technology problem, United Airlines advised that residual delays could persist into the next days. The airline noted that the issue was not connected to any cyberattack, confirming to multiple sources that it was an operational glitch rather than a security breach, as reported by BBC and SFGate.

Travelers were advised to check their flight statuses before heading to airports, as United continues to address the backlog caused by the technology disruption. Committed to improving customer experience, the airline stated it would cover expenses incurred by travelers due to the delays, according to SFGate, TRT Global, and Le Monde.