Hundreds of US Flights Cancelled After Air Traffic Control Malfunction
Summary
- Hundreds of flights were canceled or delayed at major airports across the US East Coast.
- An Amtrak construction crew accidentally damaged a fiber-optic line in New Jersey, according to Transportation Secretary Sean Duffy.
- Newark Airport recorded 168 cancellations and 97 delays, while Philadelphia reported 63 cancellations and 189 delays around 1900 GMT.
Hundreds of Flights Disrupted Across US East Coast
Air travel across the northeastern United States was disrupted Monday after a telecommunications line outage affected air traffic control operations.
The outage was linked to construction activity in New Jersey, where an Amtrak construction crew accidentally cut into a fiber line, according to US Transportation Secretary Sean Duffy.
The disruption affected flight operations at several major airports serving the New York and Philadelphia areas.
According to FlightAware data cited in the report, Newark Airport had 168 canceled flights and 97 delayed flights around 1900 GMT. Philadelphia International Airport had 63 cancellations and 189 delays at the same time.
The disruption comes as travelers increasingly rely on major East Coast aviation hubs for domestic and international connections.
What Caused the US Flight Disruptions?
Transportation Secretary Sean Duffy said an Amtrak construction crew accidentally damaged a fiber telecommunications line in New Jersey.
The incident resulted in a telecommunications outage that affected the Federal Aviation Administration’s ability to manage flights in the Northeast.
Duffy said on X that flights were beginning to resume at LaGuardia Airport and Philadelphia, while flights into Newark and JFK airports remained paused around 1900 GMT.
The incident highlights the importance of telecommunications infrastructure to modern air traffic control systems. Even though the physical damage occurred away from the airports themselves, the loss of communication infrastructure affected flight operations.
FAA Says Both Primary and Backup Systems Were Affected
According to Bryan Bedford, head of the Federal Aviation Administration, the disruption involved two separate problems.
After identifying an outage affecting the primary telecommunications line, officials discovered that the backup fiber connection had also been damaged.
Bedford described the damage to the backup line as “massive” and linked it to the construction mistake.
The existence of damage to both the primary and backup connections complicated efforts to restore normal air traffic operations.
Newark and Philadelphia Among Airports Hit
The impact was particularly visible at airports serving the New York and Philadelphia regions.
Newark Airport
Newark Airport, one of the major airports serving the New York City area, recorded:
- 168 canceled flights
- 97 delayed flights
These figures were reported around 1900 GMT, according to FlightAware.
Philadelphia Airport
Philadelphia also experienced significant disruption, with:
- 63 canceled flights
- 189 delayed flights
The figures demonstrate the broader impact of the telecommunications outage on flight schedules rather than an isolated airport-level problem.
LaGuardia and Philadelphia Flights Begin Resuming
By around 1900 GMT, Transportation Secretary Sean Duffy said flight operations were beginning to resume at LaGuardia Airport and Philadelphia.
However, flights into Newark and JFK were still paused at that time.
The situation meant that passengers traveling through the affected airports could face cancellations, delays and changes to their scheduled flights.
Travelers should therefore check directly with their airline for the latest status of their individual flight rather than relying only on airport-wide figures.
How Long Will Repairs Take?
FAA head Bryan Bedford said the primary telecommunications system was expected to be restored by early afternoon.
However, the damaged backup fiber line presented a larger challenge.
According to Bedford, repairing the backup line could take approximately 13 hours because of the extent of the damage.
The timeline means that the restoration of normal operations depended not only on bringing the primary system back online but also on repairing the backup infrastructure.
Why a Fiber Line Can Affect Air Travel
Modern air traffic management depends heavily on reliable telecommunications infrastructure.
Airports and air traffic control facilities need dependable communication systems to coordinate aircraft movements and maintain the flow of flights.
In this case, the problem was not caused by an aircraft incident or a problem with the airport runway. Instead, damage to telecommunications infrastructure disrupted the systems used for air traffic control.
The additional failure of a backup fiber connection made the situation more complicated and contributed to the widespread flight disruption.
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What Travelers Should Do
Passengers traveling through affected airports should monitor their flight status before leaving for the airport.
Because flight schedules can change rapidly during a major operational disruption, travelers should:
- Check their airline’s latest flight status.
- Confirm whether their flight has been delayed or canceled.
- Check for rebooking options if their flight is canceled.
- Allow additional time at the airport if operations resume.
- Check airport and airline notifications for further updates.
Passengers with connecting flights should also check the status of each segment of their journey because disruption at one major hub can affect connecting flights elsewhere.
US Flight Cancellations: Latest Update
The disruption was still developing at the time covered by the report. Flights had begun resuming at LaGuardia and Philadelphia, while operations involving Newark and JFK remained affected.
The FAA’s repair efforts were focused on restoring the telecommunications systems required for normal air traffic operations.
The situation could continue to change as repairs progress, meaning cancellation and delay figures may increase or decrease throughout the day.
Frequently Asked Questions
Why were hundreds of US flights canceled?
Hundreds of flights were canceled or delayed after a telecommunications outage disrupted air traffic control operations in the northeastern United States. The outage followed damage to a fiber line during construction in New Jersey.
What caused the fiber line outage?
According to Transportation Secretary Sean Duffy, an Amtrak construction crew accidentally cut into a fiber line in New Jersey.
Which airports were affected?
The reported disruption affected major airports in the New York and Philadelphia areas, including Newark, JFK, LaGuardia and Philadelphia.
How many flights were canceled at Newark Airport?
Around 1900 GMT, Newark Airport had 168 canceled flights and 97 delayed flights, according to FlightAware.
How many flights were canceled at Philadelphia Airport?
Philadelphia had 63 canceled flights and 189 delayed flights around 1900 GMT, according to FlightAware.
When will the air traffic systems be restored?
FAA head Bryan Bedford said the primary system was expected to be restored by early afternoon, while repairing the damaged backup fiber line could take approximately 13 hours.
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