FAA Nationwide Ground Stop: What Happened, Why Flights Were Halted for 4 Hours and What Comes Next

Friday the 13th lived up to its reputation for air travelers. The Federal Aviation Administration issued a rare nationwide ground stop for all U.S. airports on the afternoon of Friday, November 13, 2026, after communication problems hit multiple regional air traffic control centers. The halt began around 4 p.m. ET and was lifted at about 8:15 p.m. ET, roughly four and a half hours later, according to The Washington Post and CNBC. Airlines warn that cancellations and delays will spill into the weekend.

What caused the FAA ground stop?

In its first statement, the FAA said the stop followed communication issues affecting multiple Air Route Traffic Control Centers, the regional facilities that guide planes at high altitude between airports. It cited “extraordinary circumstances” and safety.

At a Friday evening briefing, Transportation Secretary Sean Duffy said aging air traffic control equipment became overloaded with data, which caused instability in radar information and communications with aircraft, as reported by Axios and MS NOW. Homeland Security Secretary Markwayne Mullin added that officials are looking into incompatibilities between older systems and newer equipment being installed. Duffy said the FAA never lost all radar or communications and kept allowing critical flights, such as medical evacuations, to operate.

Officials have not suggested a cyberattack, and the exact technical root cause is still being investigated.

How many flights were affected?

• Length of the halt: about 4.5 hours
• Flights disrupted: more than 10,000, according to CNBC
• Passengers stranded: an estimated 1.5 million, according to Deadline
• Recovery: airlines expect knock-on cancellations through the weekend as planes and crews are out of position

How rare is a nationwide ground stop?

Very. The last one came in January 2023, when a corrupted file in the FAA’s NOTAM system, which sends safety notices to pilots, forced a halt to departures across the country. Local NPR station KCUR noted that Friday’s event was only the second ground stop of this scale since the September 11, 2001 attacks. Smaller, airport-specific ground stops for weather or staffing happen all the time, which is why a nationwide order is such a big deal.

What happens next?

Duffy used the moment to push for more funding to replace the air traffic control system, telling reporters he can’t build without money and warning that similar problems could happen again, according to Axios. Expect hearings and pressure on Congress as the busy Thanksgiving travel period approaches.

The disruption also hit sports and entertainment. Deadline reported that college teams and production crews were among those stuck, on one of Hollywood’s busiest weekends, with Ebenezer opening in theaters.

What travelers should do

• Check your airline’s app before heading to the airport.
• Look for travel waivers that let you change flights without fees.
• If your flight was canceled, U.S. rules generally entitle you to a refund if you choose not to travel.

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Sources: The Washington Post, CNBC, Axios, MS NOW, KCUR, Deadline.