Flights Cancelled Across America as Newark, Philadelphia, and Other Airports Face 376 cancellations and 3,710 delays

Flight cancellations are being reported across the United States of America today, with 3,710 flight delays and 376 cancellations as of the latest updates. Newark Liberty is facing the greatest combined disruption, while Philadelphia, Boston, Chicago O’Hare, San Francisco, and LaGuardia are also experiencing significant interruptions. Among airlines, Southwest is facing the heaviest delays, while United is seeing the highest number of cancellations. American Airlines, Republic, and Piedmont passengers are also being affected as flight schedules change across America.

Air Traffic Restrictions Affect Major Northeast Airports

The latest wave of flight disruptions in America are tied to a failed telecommunications circuit, followed by the accidental cutting of a backup fiber cable disrupting air traffic operations. This led the Federal Aviation Administration to halt traffic at several busy East Coast airports. At one point, incoming flights were halted at all three major New York-area airports, as well as Philadelphia and Boston.

The disruption occurred as 130 world leaders and dozens of ministers were arriving in New York for the annual high-level meeting of the United Nations General Assembly, adding to the importance of the region’s already busy air travel network. Newark Liberty is facing 220 cancellations alongside 233 delays, while Philadelphia is experiencing 390 delays and 55 cancellations. JFK and LaGuardia are also dealing with operational interruptions.

The FAA’s traffic management framework includes measures such as ground stops, ground delay programs, rerouting, and other traffic flow management measures when airport capacity, equipment problems, weather, or other operational constraints affect the National Airspace System. When several airports in the same region are affected, passengers may also see consequences beyond the flight directly subject to a restriction, including changes to departure schedules and connecting itineraries.

Hardest-Hit American Airports

Newark Liberty

Newark Liberty is facing 233 delays and 220 cancellations, one of the highest levels of disruption. The FAA is reporting a ground stop, adding another operational issue for passengers traveling through the New York-area gateway. From an origin perspective, Newark Liberty is recording an 18% cancellation rate and a 20% delay rate, while its destination figures stand at 18% for cancellations and 20% for delays.

Philadelphia

Philadelphia is facing 390 delays and 55 cancellations. The FAA reports a departure delay averaging 60 minutes and increasing, meaning travelers using the Philadelphia gateway should allow additional time for changes to their schedules. For flights originating at Philadelphia, cancellations account for 5% and delays for 36%, while destination flights are seeing a 4% cancellation rate and a 37% delay rate.

Chicago O’Hare

Chicago O’Hare is facing 281 delays and 17 cancellations. Passengers traveling through the major Chicago hub should monitor their flight status as schedules change during the day. For originating flights, Chicago O’Hare is recording a 9% delay rate, while destination flights are recording an 8% delay rate.

Boston Logan

Boston Logan is experiencing 278 delays and 29 cancellations. The FAA reports a ground delay with an average delay of 105 minutes because of low ceilings, adding a weather-related factor for passengers traveling through Boston. For originating flights, Boston Logan is recording a 1% cancellation rate and a 13% delay rate, while destination flights show a 1% cancellation rate and a 27% delay rate.

San Francisco

San Francisco is facing 270 delays and 14 cancellations. According to the FAA, low ceilings are contributing to a ground delay averaging 62 minutes, which can affect departure and arrival schedules for travelers. San Francisco is recording a 1% cancellation rate and a 13% delay rate for originating flights, while destination flights are seeing a 1% cancellation rate and a 31% delay rate.

Atlanta Hartsfield-Jackson

Hartsfield-Jackson is facing 184 delays and 11 cancellations. Passengers connecting through Atlanta may need to keep an eye on connecting-flight updates as schedules change during the day. For originating flights, Hartsfield-Jackson is recording a 7% delay rate, while destination flights are also recording a 7% delay rate.

Denver

Denver is facing 179 delays and 9 cancellations. Travelers using the Colorado hub should check their flight status before heading to the airport and remain attentive to any schedule changes. Denver is recording a 9% delay rate for originating flights and a 7% delay rate for destination flights.

New York LaGuardia

LaGuardia is facing 145 delays and 6 cancellations. The FAA reports an average departure delay of 30 minutes and increasing, adding another operational consideration for travelers in the New York area. For destination flights, LaGuardia is recording a 12% delay rate.

New York JFK

JFK is facing 140 delays and 6 cancellations. The FAA is reporting a ground stop. For destination flights, JFK is recording a 12% delay rate.

Low Ceilings and Equipment Outages Reshape Flight Schedules From Boston to San Francisco

Weather-related airport capacity reductions are adding another layer to America’s flight disruptions. The FAA reports low ceilings affecting operations at Boston Logan and San Francisco, where ground-delay measures are limiting the normal flow of arriving or departing aircraft. Boston Logan is facing 278 delays and 29 cancellations, with the FAA reporting an average ground delay of 105 minutes, while San Francisco is experiencing 270 delays and 14 cancellations with an average ground delay of 62 minutes.

Low ceilings matter because an airport’s acceptance rate can be reduced when weather limits the number of aircraft that can safely be handled. The FAA specifically identifies adverse weather, including low ceilings and visibility, as a common reason for implementing Ground Delay Programs.

America’s Flight Network Faces a Complex Schedule-Recovery Challenge Across Major Hubs

The current pattern could place additional pressure on airline schedule recovery, rather than affecting individual flights in isolation. In aviation operations, irregular operations (IROPS) can involve interconnected decisions concerning aircraft assignment, crew scheduling, passenger reaccommodation, gates, and flight schedules. Research describes these resources as closely linked, meaning a disruption to one part of an airline’s operation can sometimes create additional recovery requirements elsewhere in the network.

For passengers, this may have implications for connecting itineraries when delays or cancellations affect flights operating through major hubs. Newark Liberty is recording 233 delays and 220 cancellations, while Philadelphia has 390 delays and 55 cancellations.

Airlines have a range of schedule-recovery measures available during IROPS, including aircraft reassignment, crew recovery, flight retiming, passenger reaccommodation, and gate reassignment. The specific response depends on the nature and duration of the disruption, available aircraft and crew, and operational constraints at the affected airport.

As these pressures move through America’s interconnected hub-and-spoke networks, delays at one point in an aircraft’s or crew’s scheduled rotation can potentially affect subsequent flight legs. However, the extent of any knock-on effect depends on how airlines adjust aircraft, crew, gates, passenger itineraries, and other operational resources during the recovery process.

US Airlines Most Impacted by Flight Disruptions

Southwest

Southwest is facing 708 delays and 9 cancellations, making it the airline with the heaviest delay activity in America today. Travelers flying with Southwest should monitor their flight status for possible schedule changes.

American Airlines

American Airlines is facing 676 delays and 7 cancellations. Its 20% delay figure means passengers should pay close attention to departure updates, particularly when connecting through busy U.S. hubs.

United

United is facing 343 delays and 154 cancellations. The cancellation figure is the highest among the airlines, meaning travelers flying with United should check their reservations for possible changes.

Republic

Republic is experiencing 138 delays and 65 cancellations. Passengers traveling on Republic services should monitor their flight information, particularly when connecting through larger U.S. airports.

Piedmont

Piedmont is facing 65 delays and 26 cancellations. Travelers using Piedmont services should watch for changes to departure times and onward connections.

What Can Passengers Facing Flight Cancellations Do?

• Check the airline’s app, website, or airport display for the latest flight status.
• Contact the airline promptly if a flight is cancelled and ask about available rebooking options.
• Keep booking information and travel documents easily accessible.
• Confirm how checked baggage will be handled after a cancellation.
• Allow additional time at the airport when delays are affecting departures.
• Check connecting-flight status before beginning a journey.
• Keep medication, identification, chargers, and other essential items in carry-on baggage where possible.
• Contact the airline promptly if a delay affects an onward connection.

Overview of America Flight Cancellations

Travelers across America are dealing with interruptions at several major aviation hubs. Newark Liberty is facing 233 delays and 220 cancellations, while Philadelphia is experiencing 390 delays and 55 cancellations.

The disruption also extends to major airports farther west. Chicago O’Hare is facing 281 delays and 17 cancellations, while San Francisco is experiencing 270 delays and 14 cancellations. Denver is facing 179 delays and 9 cancellations.

In the Northeast, Boston Logan is experiencing 278 delays and 29 cancellations. FAA reports indicate that low ceilings are contributing to its ground delays. New York LaGuardia, JFK, and Newark Liberty are also facing operational issues, with FAA reports pointing to equipment-related disruptions at each airport.

Airline operations are also affecting passengers across America. Southwest is facing 708 delays, while American Airlines is facing 676. United is experiencing 343 delays and 154 cancellations, while Republic is facing 138 delays and 65 cancellations. Piedmont is also facing 65 delays and 26 cancellations.

With airport delays, cancellations, weather conditions, and equipment-related issues affecting flight operations, travelers should check directly with their airline for the latest information before departure.

Yesterday also saw significant flight cancellations. Read our earlier coverage here.

The data has been extensively curated by our editorial team using real-time aviation figures recorded on 21 September 2026 at 1:45 pm ET USA

Primary Source: FlightAware.

Verification Protocol: All statistics have been independently reviewed and cross-checked by our human editorial desk. Timestamped records, data logs and feed snapshots are securely archived internally to support historical accuracy and editorial transparency.

Note: Real-time flight-tracking figures reflect active airspace and operational data. Minor variations may occur when compared with information displayed at individual airport terminals or airline departure gates.

Travelers are advised to check directly with their respective airlines and airports for the latest flight status, schedule changes and operational updates. 

Verified by Rana Pratap