A failure of the primary communications circuit at the Federal Aviation Administration (FAA) air traffic control facility in Philadelphia on September 22, 2026, caused extensive disruption across major Northeast U.S. airports. Commercial flights at Newark Liberty International Airport were nearly halted from about 9:40 a.m. to just after 5:20 p.m. local time. More than 600 flights into and out of Newark and over 200 flights at Philadelphia International Airport were cancelled. Additional delays and cancellations affected LaGuardia and John F. Kennedy (JFK) airports in New York.
Backup Fiber Optic Cable Severed by Railroad Construction Workers
The outage was exacerbated when the backup fiber optic communications line, which would have
allowed automatic failover, was severed by a New Jersey Transit construction crew working between Newark and New Brunswick, New Jersey. This prevented the air traffic control center from rerouting communications, extending the outage duration. FAA Administrator Bryan Bedford described the fiber break as “massive,” estimating about 13 hours for repairs. Verizon technicians collaborated with FAA teams to fix both the primary circuit and the cut backup line. The primary circuit failure occurred during an infrastructure overhaul project at the Philadelphia facility.
Flight Groundings, Cancellations, and Passenger Impact
The communication failures caused a near-standstill in commercial operations at Newark Liberty International Airport for seven hours. Airlines waived
change fees to help passengers adjust travel plans amid more than 600 cancellations at Newark alone. Over 200 flights were also cancelled at Philadelphia International Airport. Several travelers reported lengthy delays and last-minute cancellations causing overnight stays. Cindy Phan, who was delayed and rerouted from Newark to Minneapolis, said she lost an entire day in New York and had to pay for a hotel stay. Another passenger, Shannon Franke, experienced a canceled final leg to Philadelphia after attending a Philadelphia Eagles game, remarking that the disruption was ‘so much worse’ only because of the late cancellation.
Timing Amid Political Events and FAA Technological Developments
The outage coincided with
U.S. President Donald Trump and foreign leaders traveling to New York City for the United Nations General Assembly, intensifying congestion in Northeast airspace. Meanwhile, on the same day, the FAA initiated tests of a new AI-driven traffic scheduling system in Washington, D.C., unrelated to the Philadelphia outage. The FAA facility responsible had caused disruptions at Newark Liberty International Airport the previous spring in 2025 due to prior technical issues. Transportation Secretary Sean Duffy confirmed that while repairs to the communications lines were completed, it would take time to clear backlogs, stating, “It will take some time to clear all existing
delays.”
