Technical Problems at Key Air Traffic Center Disrupt Flights Across U.S. Northeast

Hundreds of flights were canceled across the U.S. Northeast on Monday following technical problems at a key regional air traffic control center, impacting major airports throughout the New York City area for several hours, according to the Federal Aviation Administration.

The disruption stemmed from a failure at an FAA facility in Philadelphia. The primary communications line carrying data into the facility failed Monday morning, and when the system attempted to switch to its secondary option, officials discovered that the backup fiber optic line had been severed by construction workers. The dual failure left air traffic controllers temporarily without essential radar and communication capabilities.

The widespread outage affected flights arriving and departing from John F. Kennedy International Airport, LaGuardia Airport, Newark Liberty International Airport, and Philadelphia International Airport.

By Monday evening, flights began resuming at all impacted airports, though federal aviation officials and airlines warned that significant delays would likely persist through the remainder of the day. In response to the schedule disruptions, some airlines offered passengers the option to modify their travel itineraries without incurring change fees, while the FAA advised travelers to verify their flight statuses directly before traveling to the terminals.

The timing of the technical failure coincided with the arrival of President Donald Trump and numerous international leaders flying into New York City to attend the United Nations General Assembly.

According to the FAA, regional control facilities utilize two separate lines to transmit radar and communications data: a primary circuit and a backup line. The agency noted that Monday's incident shares similarities with technical difficulties at the same Philadelphia FAA facility that previously caused flight disruptions at Newark Liberty International Airport in the spring of 2025.

Accountability for the severed backup fiber optic line became a point of contention among transit agencies. Transportation Secretary Sean Duffy stated that an Amtrak construction crew was responsible for the break, whereas Amtrak officials countered that a New Jersey Transit construction crew working in the area between Newark and New Brunswick, New Jersey, caused the damage.

FAA Administrator Bryan Bedford informed reporters that the agency was actively working to restore the primary connection by installing a new circuit while simultaneously coordinating repairs on the damaged backup fiber line. Bedford noted that repairing the major fiber break would take considerable time, though installing a new primary circuit could potentially restore functionality sooner.

Verizon stated that its technicians were deployed to assist in restoring service as quickly as possible. The primary circuit that failed on Monday is already scheduled for replacement as part of an ongoing modernization overhaul of the nation's air traffic control infrastructure.

Separately on Monday, the FAA initiated testing on a new computer system utilizing artificial intelligence designed to help controllers anticipate scheduling conflicts and weather complications in order to improve rerouting. However, the agency confirmed this new system is currently limited to testing in the Washington, D.C., area and was unrelated to the Northeast facility outages.