Nearly 2,000 Flights Were Cancelled in a Day as Northeast Controllers Called Out Sick

On August 7, 2026, the FAA issued ground stops at seven Northeast airports, including Newark Liberty, JFK, LaGuardia, and Washington Dulles. Controller call-outs and severe thunderstorms combined to cancel nearly 2,000 flights nationwide in a single day.

It followed a rough day before it. On August 6, weather and an equipment outage forced service cuts at nine major airports, including Atlanta, Boston, and Minneapolis-St. Paul.

Transportation Secretary Sean Duffy said 40 to 60 percent of controllers called out sick at multiple facilities in the New York region on August 7. In a message posted to X, Duffy warned travelers flying in and out of the Northeast to “be prepared for delays and cancellations due to controllers calling out sick on top of difficult weather patterns,” and pointed them to fly.faa.gov for real-time staffing updates.

The disruption carried into the following days. On August 8, Yahoo Travel reported that airlines had cancelled 485 US flights by mid-morning, with JetBlue cancelling the largest share of its schedule of any major carrier, about 6 percent.

Delta, American, and United all posted smaller but still elevated cancellation counts the same day, according to Men’s Journal.

Why a sick call at one facility grounds flights everywhere

A ground stop driven by staffing is not a malfunction. The FAA sets a minimum number of certified controllers required to safely work a given volume of traffic at a facility, and it will not let more airplanes into that airspace than the controllers on position can handle.

When 40 to 60 percent of a shift calls out sick, as Duffy described happening in the New York region, the facility’s safe capacity drops. The agency then has to slow or stop traffic to match it.

New York-area facilities are a particularly bad place for this to happen. They sit at the bottom of the FAA’s own staffing rankings even in a normal week, a chronic shortfall AeroCorner covered in depth in our piece on why there aren’t enough air traffic controllers.

Layer a wave of sick calls and a line of summer thunderstorms on top of a facility that is already thin, and the two problems compound each other instead of adding.

A second bad day, a different cause

The August 6 disruption at nine airports, including Atlanta, Boston, Baltimore/Washington, Las Vegas, Orlando, and Minneapolis-St. Paul, was driven mostly by severe weather. A separate FAA equipment outage at Minneapolis-St. Paul briefly halted departures there on top of the storms.

That is a distinct event from the August 7 controller call-outs, even though the two ran back to back and both landed hardest on East Coast travelers.

Delta and United both extended change-fee waivers and flexible rebooking to passengers travelling through their affected Northeast hubs, including Boston, Newark, JFK, LaGuardia, and Philadelphia, running through August 10 and 11 depending on the carrier.