More than 600 flights were canceled and nearly 100 delayed at Newark Liberty International Airport on Monday, September 21, 2026, following a Verizon fiber optic cable cut by a construction crew in New Jersey. The incident severed the Federal Aviation Administration’s (FAA) backup communications feed at the Philadelphia TRACON facility, compounding an earlier failure in the primary circuit.
Widespread Disruptions Across Northeast Airports
The outage forced the FAA to impose ground stops and flight restrictions at Newark Liberty International Airport, Philadelphia International Airport, LaGuardia Airport, John F. Kennedy International Airport, and Teterboro Airport. Philadelphia International Airport saw over 200 flight cancellations and more than 400
delays. Over 100 flights destined for Newark were diverted to airports including Detroit Metropolitan Wayne County Airport and Washington Dulles International Airport, affecting airspace throughout the U.S. Northeast region.
Cause and Repair of Communications Failures
The primary FAA communication circuit at Philadelphia TRACON failed earlier Monday morning. When switching to the backup circuit around 9:45 a.m., FAA officials discovered that the Verizon fiber-optic cable had been severed by a construction crew working about 10 feet from utility markings in New Brunswick and North Brunswick, New Jersey. Verizon stated the contractors dug up and cut the cable, noting the contractors are responsible for calling in correct utility
markings and the excavation work. NJ Transit is investigating the incident alongside Verizon and the contractor.
Repair Completion and Continuing Delays
Repairs to the fiber optic cable were completed by Monday evening, with Transportation Secretary Sean Duffy confirming operations began to return to normal while noting delays would take time to clear. FAA Administrator Bryan Bedford explained that during the attempt to switch to the backup, they discovered the fiber had a break. Airlines continue addressing the backlog caused by the outage.
Traveler Impact and Airline Responses
Hundreds of flights were disrupted at the affected airports, with cancellations, delays, and diversions extending travel times. United Airlines, the busiest international carrier
at Newark, and American Airlines, which has a hub in Philadelphia, waived flight change fees and provided accommodations to impacted travelers. The outage coincided with international delegations arriving for the United Nations General Assembly in New York, delaying Canadian Prime Minister Mark Carney and others.
Infrastructure Vulnerabilities and Need for Modernization
The incident highlighted vulnerabilities in America’s aging air traffic infrastructure and underscored calls for multibillion-dollar modernization funding. Transportation Secretary Sean Duffy emphasized reliance on decades-old data architectures and systems. FAA Administrator Bryan Bedford outlined plans to replace aging copper-based lines and legacy systems with a modern federal enterprise network, citing the current system’s 50-year-old architecture.
The outage occurred the same day the FAA unveiled SMART, an AI-supported air traffic management platform unrelated to the communications failure.
Verizon reiterated its cables were properly placed and implicated contractor excavation for the damage. NJ Transit stated, “We will continue to work closely with Verizon and the contractor as the circumstances surrounding the incident are being investigated. We will provide additional updates as information becomes available.” An air traffic controller at Philadelphia International Airport described operational challenges during the outage, saying, “Yeah, man, nothing works, People are getting out, but it’s slow going.”
