A Federal Aviation Administration (FAA) equipment outage at Philadelphia TRACON triggered ground stops causing widespread flight delays and cancellations this Monday, September 21, 2026, across major airports in the New York metro and Philadelphia areas. Newark Liberty International (EWR), John F. Kennedy (JFK), LaGuardia (LGA), and Philadelphia International (PHL) airports all experienced disruptions due to interconnected scheduling systems and cascading effects.
Flight Disruptions Concentrated at Newark and Philadelphia Airports
Newark Liberty International Airport recorded the largest impact, with FlightAware reporting over 100 flights canceled or delayed, affecting approximately 20% of all scheduled flights. Philadelphia International Airport faced delays on more than 30% of departures and arrivals, contributing to
significant backlog. Disruptions at John F. Kennedy and LaGuardia airports also added to the regional congestion though specific figures were not provided.
Airlines Respond with Travel Waivers for Philadelphia Passengers
United Airlines and American Airlines have issued travel waivers permitting passengers to rebook flights without change fees for those traveling through Philadelphia International Airport. These waivers have not yet been extended to passengers departing from the New York City airports of Newark, JFK, or LaGuardia.
Travelers planning trips into or out of Newark Liberty, JFK, LaGuardia, or Philadelphia International airports should anticipate cascading delays and possible cancellations resulting from the FAA system failure. The outage has led to
‘ATC Zero’ conditions, grounding flights at impacted locations as of early afternoon on September 21.
