Some flights still canceled a day after nationwide ground stop

More than 4,000 flights across the United States were canceled on Saturday as airlines continued to recover from Friday’s nationwide FAA ground stop, which affected all departures and prompted widespread disruption in air travel. The tally of cancellations follows the previous day’s halt and reflects ongoing ripple effects as carriers reorganize schedules and rebook travelers in the immediate aftermath, according to Yahoo News Canada.

The United States faced the longest nationwide ground stop in 25 years, and reports indicate more than 2,000 additional flights were canceled on Saturday as the industry worked to return to normal operations. The stoppage was described as a precautionary safety measure tied to evolving issues affecting air-traffic-control coordination, with rebooking and rerouting efforts prioritized as operations began to normalize, per Toronto Star.

The FAA lifted the nationwide ground stop on Friday afternoon, with officials noting that departures across U.S. airports would resume in stages after authorities assessed safety concerns. Open questions remained about the scope of backlogs and how international arrivals would be handled on a case-by-case basis as recovery progressed, according to Toronto Star and Global News summaries of the situation.

The grounding was attributed to a communications outage that disrupted air-traffic-control operations nationwide, according to multiple outlets. The Guardian and Open Jaw characterized the outage as a communications problem rather than a cyberattack, with officials saying guidance would continue to evolve as recovery efforts proceeded and as delays persisted across hubs coast to coast.

Calgary and other Canadian airports reported awareness of the FAA action and noted that flights bound for the United States were halted while the wider U.S. airspace was constrained. CTV News described that all Friday flights to the lower 48 states were canceled at Calgary, with some delays still possible on other routes, and Nav Canada indicating continued efforts to maintain safe air movement as flights resumed. The situation also prompted airlines such as Air Canada and WestJet to follow regulatory directions while some airborne services were allowed to continue en route.

France 24 and Global News corroborated that the ground stop was lifted, with officials clarifying that the disruption did not stem from a cyberattack or a Microsoft outage, but rather from underlying technical issues affecting communications. Transportation Secretary Sean Duffy characterized the incident as resulting from a communications problem, and Homeland Security stated there were no signs of a nefarious attack as recovery efforts proceeded and operations ramped back up gradually.

The Guardian’s extended reporting noted approximately 7,000 flights delayed or canceled as the stoppage unfolded, with the impact felt at major hubs across the country. Homeland Security reiterated there were no indications of an attack, and officials said guidance would continue to evolve during the recovery phase as the national airspace transitioned back toward normal operations.

Canadian coverage highlighted that Edmonton and Montreal area airports were among those affected on Friday, with Montreal-Trudeau International Airport suspending flights to and from the United States and travelers urged to check airline status for updates. CTV News also reported Edmonton departures bound for U.S. destinations affected by the FAA action, while Montreal-focused reports emphasized disruptions across the region as U.S. flights resumed under evolving conditions.

Daily Hive and Al Jazeera provided context by describing the stoppage as a precaution while air-traffic-control communications were reviewed, noting that delays and a broad backload were expected as schedules were restored. They highlighted O’Hare International Airport as a notable carve-out location during the halt, with a mid-afternoon pause from about 1:00 p.m. to 2:15 p.m. local time due to nearby thunderstorms, though other outlets did not uniformly specify airport-level exceptions.