Ground stop ordered for United Airlines at O'Hare over tech problem

United Airlines Faces Major Technology Issue, Grounding Flights Across the U.S.

A significant technology issue has caused a ground stop for all United Airlines flights heading to Chicago and other major airports across the country. This disruption has led to widespread delays and cancellations, affecting thousands of passengers. The Federal Aviation Administration (FAA) confirmed that all United Airlines flights departing from Chicago O’Hare International Airport have been grounded at their respective departure points.

The issue initially occurred just before 5:15 p.m. on Wednesday. In addition to Chicago, the FAA reported that Denver, Newark, Houston, and San Francisco are also experiencing similar challenges due to the ground stop. Passengers have shared accounts of being stuck on the tarmac for nearly three hours, waiting to either take off or de-board their flights.

According to one traveler, the pilot informed them that the airport’s traffic monitoring, taxing, landing, and disembarking systems were all nonfunctional. Some planes had to be manually pulled to gates until the issue could be resolved. These disruptions have created a chaotic environment for travelers, with many forced to wait for extended periods without clear information about when their flights would resume.

Passenger Stories and Impact

WGN-TV spoke with several affected passengers, including a woman and her daughter whose flight was ultimately canceled. The family had planned to visit Burlington, Vermont, for a family visit and college tour. Instead, they found themselves stranded without a clear path forward. Another passenger reported receiving a $200 hotel reimbursement from United Airlines as compensation for the inconvenience.

One traveler mentioned that around 8:15 p.m., the pilot of his plane said the systems were coming back online, and planes should be moving again soon. However, the overall impact of the outage continued into the evening, with many passengers still waiting for updates.

United Airlines issued an initial statement explaining the situation: “Due to a technology issue, we are holding United mainline flights at their departure airports. We expect additional flight delays this evening as we work through this issue. Safety is our top priority, and we’ll work with our customers to get them to their destinations.”

Later in the evening, the airline provided an updated statement: “We are working with customers to get them to their destinations after a technology disruption on Wednesday evening. The underlying technology issue has been resolved, and while we expect residual delays, our team is working to restore our normal operations.”

Background on the Technology Outage

United Airlines provided further details about the incident, explaining that the affected system is called Unimatic. This system houses critical information about each flight, which is then fed to other systems, such as those that calculate weight and balance and track flight times. The outage began at 5:12 p.m. CDT and was resolved within a few hours, although some residual delays persisted into the night.

Transportation Secretary Sean Duffy confirmed that he was in contact with United Airlines and the FAA during the incident. He stated that the issue was unrelated to the broader air traffic control system. Additionally, United clarified that the outage was not connected to recent concerns about cybersecurity in the airline industry.

Customer Support and Compensation

As part of its response, United Airlines treated the incident as a controllable delay, meaning it covered customer expenses such as hotels when applicable. The airline emphasized its commitment to ensuring passengers reach their destinations safely and efficiently.

This event highlights the importance of robust technology systems in modern air travel. While the issue has been resolved, the disruptions caused by the outage serve as a reminder of how interconnected and dependent the aviation industry is on its digital infrastructure.

Passengers affected by the outage are encouraged to check with United Airlines for updates and any additional support they may need. As the airline works to restore full operations, travelers are advised to stay informed and plan accordingly.