FAA Nationwide Ground Stop Causes Massive Flight Cancellations Across United States

The Federal Aviation Administration issued a nationwide ground stop on Friday afternoon that lasted for more than four hours. The disruption, caused by technical issues during infrastructure upgrades, resulted in significant delays and thousands of canceled flights across the United States. The ground stop was lifted at 8:15 p.m. ET, marking the longest nationwide stoppage in 25 years.

Technical causes and system failures

The disruption occurred during maintenance work performed by contractor L3Harris Technologies Inc. to replace old copper wiring with fiber wiring. This maintenance work caused a system overload that resulted in intermittent communication and radar gaps. U.S. Secretary of Transportation Sean Duffy stated that the contractor or the equipment failed to meet the moment.

The scale of the disruption affected a significant portion of the national aviation network. Aviation consultant Andrew Charlton noted that the stoppage affected approximately a quarter of the 45,000 daily flights in the United States. This event represents the first nationwide ground stop since a computer system malfunction occurred in January 2023 and the second since the September 11, 2001, attacks.

Flight cancellation data and impact

The number of canceled flights varies by reporting source. The Sun reported over 19,000 total cancellations, including 12,000 flights canceled on Friday and 6,600 on Saturday. As of Saturday afternoon, FlightAware reported 160 flights canceled on Sunday. FlightAware also reported that over 14,000 flights were canceled on Friday and Saturday combined, while media reports reported that 15,000 flights were impacted during that period.

Major carriers including American Airlines, Southwest, Delta, and United Airlines are offering traveler waivers to passengers affected by the delays. Travel industry expert Brett Snyder suggested that flight schedules will likely not return to normal until Monday at the earliest.

Recovery and future outlook

Federal Aviation Administration Administrator Bryan Bedford stated that air travel should return to normal by the end of Sunday, November 16, 2026. During a news conference, Bedford noted that the worst of the disruption is behind the aviation industry.

The incident has highlighted vulnerabilities in the aging infrastructure being upgraded. While the ground stop has ended, the aviation industry continues to manage the backlog of flights caused by the technical failure and the resulting communication gaps.

Glossary

• ground stop — A ground stop or ground delay is an action issued by the FAA. It can be used to manage flight disruptions, such as those caused by equipment outages.