United Airlines Resumes Flights After System-Wide Tech Issue

United Airlines has resumed flights after a system-wide technology issue caused a pause in departures. The issue was with the company's Unimatic system, which stores flight data and feeds it to other systems. The airline expects residual delays but is working to restore normal operations.

United Airlines (NASDAQ: UAL) has resumed flights after a system-wide technology issue caused a pause in departures. The issue was with the company's Unimatic system, which stores flight data and feeds it to other systems. The airline expects residual delays but is working to restore normal operations.

The technical glitch began on Wednesday, August 6, and affected United Airlines' computer systems, specifically the weight and balance computer system. This system is crucial for tracking flight information, calculating safe loading, and feeding data into other operational systems. The Federal Aviation Administration (FAA) issued a ground stop for United Airlines flights at several U.S. airports, including Chicago, Houston, Denver, Newark, and San Francisco.

United Airlines reported that the system outage began after 6 p.m. ET and was resolved later that evening. The airline warned of continued residual delays as staff worked through the backlog and rerouted stranded passengers. The problem was not related to a cyberattack, according to company statements.

This incident highlights the importance of robust IT systems in the aviation industry. United Airlines is committed to resolving any residual issues and ensuring the safety and comfort of its passengers.

References:
[1] https://seekingalpha.com/news/4480937-united-airlines-resumes-operations-after-technical-glitch
[2] https://www.cnbc.com/2025/08/07/united-airlines-halts-flights-at-us-airports-amid-technical-issue.html