Denver International Airport imposed a ground stop on Saturday, August 15, 2026, due to severe thunderstorms affecting final approach courses to the airport. The Federal Aviation Administration (FAA) lifted the ground stop at 4 p.m. local time after holding arrivals for several hours.
According to data tracked by FlightAware as of 4:30 p.m., 91 flights into and out of Denver were canceled, and 708 flights experienced delays. SkyWest Airlines reported 38 cancellations and 121 delays, United Airlines had 34 cancellations and 265 delays, Southwest Airlines faced 14 cancellations and 211 delays, and Frontier Airlines saw 5 cancellations and 49 delays.
Flights arriving at Denver experienced average delays of two hours following the lifting of the ground stop.
Weather Conditions Causing Disruptions
The National Weather Service issued a severe thunderstorm watch for the Front Range metro area, including Denver, remaining in effect until 9 p.m. on August 15, 2026. Storms brought damaging winds, large hail, and heavy rainfall, with rates possibly reaching 1 to 2 inches within 30 minutes. These conditions contributed to localized flash flooding and impacted airport operations.
The FAA attributed the ground stop to thunderstorms encroaching on final approach paths, making it unsafe for aircraft to land. While the FAA initially forecast
the stop could last until 9:59 p.m., the restriction was lifted earlier as conditions improved.
FAA Response and Operational Impact
The FAA maintained the ground stop to hold all arrivals at Denver International Airport until it was safe to resume landings. Despite lifting the ground stop at 4 p.m., the agency noted ongoing flight delays averaging approximately two hours for inbound flights. Major carriers including SkyWest, United, Southwest, and Frontier experienced significant disruptions affecting hundreds of flights throughout the day.
