The Federal Aviation Administration (FAA) in the United States has mandated the immediate halt of all departing flights nationwide, citing "exceptional circumstances and security concerns." This unprecedented move has effectively grounded the country's airspace.
Transportation Secretary Sean Duffy confirmed the decision via social media, attributing the cause to a communication breakdown that simultaneously impacted all Air Route Traffic Control Centers, which are the regional facilities managing en-route flight traffic across American airspace, as reported by CNN.
"Air traffic must remain on hold until further notice. International flights will be handled on a case-by-case basis," the FAA stated in its operational notice.
Duffy mentioned that "FAA technicians are investigating the issue," without providing further insight into the origin of the glitch or an estimated timeframe for its resolution.
Based on the agency's operational records, the stoppage was in effect approximately from 3:10 PM to 4:30 PM Eastern Time, initially affecting up to 2,950 flights with maximum delays of 71 minutes and an average delay of 33 minutes. A subsequent update reduced the number to 647 flights with maximum delays of 66 minutes.
A source cited by U.S. media described the incident as a potential "progressive frequency interruption," although the FAA has not officially confirmed this characterization.
Nationwide ground stops are extremely rare events in U.S. aviation history. The last occurrence was in January 2023, when the pilot notification system failed due to the accidental deletion of files by contracted personnel, resulting in nearly 9,000 delays and 1,300 cancellations nationwide before the situation was resolved in under two hours, as noted by the Associated Press.
Prior to this, the only complete airspace shutdown occurred on September 11, 2001, following the terrorist attacks, when the closure lasted almost two days.
This Friday's incident comes at a time when the FAA and the Department of Transportation have been executing an ambitious plan to modernize air traffic control infrastructure. As part of this effort, the agency aims to hire 2,200 new controllers during the fiscal year 2026, aiming for a total of 12,563 certified controllers. As of April this year, the FAA had approximately 11,000 active controllers and another 4,000 in training.
The U.S. airspace had already experienced several smaller-scale incidents in 2026: in July, a technological failure at American Airlines necessitated the grounding of its entire fleet, resulting in around 1,100 delays and at least 221 cancellations; in September, a fiber optic cut at the Philadelphia control center led to about 500 cancellations at Newark Airport alone.
As of the closing of this information, the FAA had not issued a formal statement announcing the definitive lifting of the nationwide order.
Key Information about the FAA Flight Halt
What caused the recent flight halt by the FAA?
The FAA halted flights due to a communication breakdown affecting all Air Route Traffic Control Centers.
How long did the flight stoppage last?
The stoppage was in effect from approximately 3:10 PM to 4:30 PM Eastern Time.
When was the last time a nationwide ground stop occurred in the U.S.?
The last nationwide ground stop was in January 2023 due to a failure in the pilot notification system.