The Federal Aviation Administration lifted a nationwide ground stop on all flights at 8:15 p.m. EST Friday, ending an hourslong halt that stranded millions of airline passengers across the United States.

The order came down shortly after 8 p.m., just before Transportation Secretary Sean Duffy and Homeland Security Secretary Markwayne Mullin briefed reporters in the White House press briefing room. The FAA had updated its website moments before the two cabinet secretaries spoke.

"At 8:15 tonight Eastern time, we opened up the airspace. Now, does that mean every flight is going to fly right now? It's going to be slow, right?" Duffy told reporters. He apologized for his casual appearance, explaining that he had been traveling himself when the disruption hit.

What caused the historic halt?

The mechanism was telecommunications, not weather and not aircraft. The FAA halted all flight departures nationwide Friday afternoon because of a "rolling frequency outage" affecting the facilities that monitor planes already in the air.

Mullin said during an earlier briefing that a telecommunications issue was to blame, and that the disruption prompted air traffic controllers to lose contact with aircraft in certain regions of the country. That is the nightmare scenario in air traffic management: controllers on the ground unable to reach cockpits.

The culprit sits inside the FAA's Telecommunications Infrastructure, or FTI — a nationwide, secure network that connects all air traffic control facilities, airports and FAA systems across U.S. airspace. When an FTI line goes down, the circuit has failed. The consequences can include lost communications between air traffic control facilities and the failure of certain operational equipment.

Mullin said the FAA "was going in and putting patches into the system" when the telecommunications lines between controllers who manage high-altitude flights and pilots were disrupted.

Did new technology overwhelm old systems?

That is the explanation Mullin offered from the briefing room podium. "They were putting new equipment and new technology, and that new equipment, new technology just wasn't — it was overwhelming the older system," he said.

In plain terms: modernization work was running up against aging infrastructure, and the strain broke communications. The failure played out Friday, Nov. 13, 2026, in the James Brady Briefing Room's view of the crisis and across every departure board in the country.

How big was the damage?

The numbers were severe. As of 7 p.m. local time:

• More than 2,700 flights canceled
• 11,000 flights delayed
• Millions of passengers stranded

Duffy warned that reopening the airspace would not mean instant recovery. Recovery will be slow, he said — flights return to schedule gradually after a full-system stop, not all at once.

What does this mean for ATC funding?

Duffy used the failure to press Congress for money — a lot of it. He said the breakdown was reason for lawmakers to approve an additional $50 billion to overhaul the air traffic control system.

That figure marks a sharp escalation. It is significantly higher than the $30 billion Duffy had requested from Congress earlier this fall.

Some money is already moving. Congress passed $12.5 billion in July 2025 to begin overhauling the air traffic control system, and the FAA has started replacing infrastructure — radar, software, hardware and telecommunications — through more than 10,000 projects nationwide.

The gap between $12.5 billion enacted and $50 billion now sought tells the story of Friday's failure in budget terms. The system that failed was the very network those projects are meant to replace, and a single rolling outage grounded an entire national airspace for hours.