The Federal Aviation Administration imposed and lifted a ground stop at Denver International Airport on Saturday, August 15, 2026, due to severe thunderstorms encroaching on final approach routes. The ground stop was lifted at 4 p.m. local time after storms with heavy rain, damaging winds, and large hail disrupted operations.
Flight Disruptions Across Airlines
The storm caused significant flight delays and cancellations, with a total of 91 flights canceled and 708 delayed by 4:30 p.m. at Denver International Airport. SkyWest Airlines recorded 38 cancellations and 121 delays. United Airlines faced 34 cancellations and 265 delays. Southwest Airlines had 14 cancellations and 211 delays. Frontier
Airlines reported 5 cancellations along with 49 delays. During the ground stop, departures to Denver from the contiguous United States experienced an average delay of 114 minutes.
Severe Weather Impact and Ongoing Conditions
Severe thunderstorms included heavy rainfall rates potentially reaching 1 to 2 inches in 30 minutes across the Denver metro area, according to CBS Colorado meteorologist Callie Zanandrie. The National Weather Service issued a severe thunderstorm watch for the Front Range region that remained in effect until 9 p.m. Damage threats involved large hail and strong wind gusts. Additional heavy rain was forecast for the weekend, raising chances for prolonged disruptions.
Passengers traveling to
and from Denver experienced average delays of approximately two hours for flights arriving after the ground stop was lifted, as reported by the FAA. Departures during the ground stop faced a similar delay duration averaging 114 minutes. The FAA attributed the ground stop to thunderstorms affecting final approach courses, which necessitated holding all arrivals to maintain safety.
