Flight operations resumed Tuesday, September 22, at New York City-area airports following a communications failure at the Federal Aviation Administration’s Philadelphia air traffic control facility that disrupted hundreds of flights on Monday, September 21. The outage affected major Northeast hubs including Newark Liberty International and Philadelphia International Airports.
Flight Cancellations and Delays at Northeast Airports
More than 600 flights were canceled Monday at Newark Liberty International Airport in New Jersey amid the outage, with no commercial flights landing there between approximately 9:40 a.m. and 5:20 p.m. local time, according to Flightradar24. Philadelphia International Airport also recorded over 200 canceled flights. LaGuardia and John F. Kennedy International Airports
in New York experienced operational disruptions during the same period. Early Tuesday morning, Flightaware.com reported about 40 delayed and nearly 60 canceled flights at Newark.
Resumption of Service and Ongoing Impact
Flight operations were restored at the affected airports by Monday evening after repairs were completed. However, Transportation Secretary Sean Duffy stated it would take time to clear the accumulated delays. Some airlines allowed passengers to change flights without penalty following the disruptions. Despite resumed service, delays and cancellations continued into Tuesday as the backlog of affected flights was addressed.
Cause of the Communications Failure
The FAA identified a failure of the primary communications circuit at the Philadelphia control facility Monday
morning as the initial source of the incident. When switching to the backup fiber optic circuit, operators discovered it had been severed. The backup line was cut inadvertently by a railroad construction crew working between Newark and New Brunswick, New Jersey. Transportation Secretary Duffy blamed Amtrak’s construction team, while Amtrak attributed the damage to a New Jersey Transit crew.
Incident Timing and Effects on VIP Arrivals
The disruption coincided with arrivals of President Donald Trump and numerous foreign leaders to New York City for the United Nations General Assembly. Canada’s Prime Minister Mark Carney missed a U.N. event on Monday due to flight delays but arrived in
New York by that evening.
Official Response and Background
The FAA explained that regional control centers rely on primary and backup communication lines for radar and air traffic data. Both systems failed during Monday’s incident. Similar technical problems at the Philadelphia FAA facility had caused operational disturbances at Newark Airport the previous spring. Secretary Duffy commented, “it will take some time to clear all existing delays” despite restoration efforts.
