FAA orders ground stop after communications outage snarls air travel

What happened

The FAA reported a "temporary telecommunications outage" on X and said it stopped departures out of an "abundance of caution." The agency said it put the nationwide pause in place around 4 p.m. ET because communications problems were hitting several Air Route Traffic Control Centers, which manage planes at cruising altitudes between airports.

Cirium said 11,000 flights were slated to leave U.S. airports after 4 p.m. ET with roughly 1.5 million passengers on board. It also counted about 600 diversions on Friday, including 104 that were rerouted to other airports.

How the disruption unfolded

The FAA later said departures could resume as en route facilities recovered, "through coordination with the air traffic control system." International departures from coastal hubs had started moving before 6 p.m. ET, and the agency said inbound international arrivals would be handled individually on a case by case basis.

Even after the stop lifted, airports had to find places to park aircraft, keeping congestion high. Even with flights restarting, delays were expected to persist, and airlines kept trimming schedules as the disruption wore on. The FAA said its technicians are investigating the outage.

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The bigger picture

Ground stops freeze flights at their origin, and the longer they last the more they snowball as crews hit daily duty limits. Nationwide stops are rare: the FAA grounded flights in January 2023 over a pilot alert system issue, and earlier after the Sept. 11, 2001 attacks.

Recurring tech problems have dogged U.S. air traffic, with aging infrastructure and staffing shortages a long running sore point for airlines. In September, a construction accident in New Jersey cut a Verizon fiber cable, severing a backup data feed for controllers and triggering hundreds of cancellations, delays, and diversions into Newark, New Jersey, and Philadelphia. In 2025, an equipment failure led controllers to lose communications with planes bound for and departing from Newark Liberty International Airport, causing massive delays and fueling worries about outdated systems and lean staffing.

What it means for your portfolio

Expect rolling delays, more cancellations, and schedule reshuffles as airlines reposition planes and crews. JetBlue told staff it would cancel the rest of Friday's flights except Europe routes, plus some Saturday flights to reset, while major U.S. carriers said they will work with affected customers and urged travelers to check for updates. The bottom line: operational hiccups like this raise costs, stress customer service, and can dent on time performance that feeds into guidance.

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