A Federal Aviation Administration (FAA) ground stop at Denver International Airport due to thunderstorms was lifted at 4 p.m. on August 15, 2026. The stop was implemented because severe storms were encroaching on final approach courses, forcing a halt to arriving flights.
FlightAware data showed 91 flights canceled and 708 delayed as of 4:30 p.m. on August 15. SkyWest Airlines experienced 38 cancellations and 121 delays, United Airlines had 34 canceled and 265 delayed flights, Southwest Airlines reported 14 canceled and 211 delayed flights, and Frontier Airlines registered 5 canceled with 49 delayed flights. After the ground stop was lifted,
flights bound for Denver were delayed on average by two hours.
Weather Conditions and Ongoing Impact
The National Weather Service issued a severe thunderstorm watch for the Front Range region including the Denver metro area until 9 p.m. on August 15. Expected severe weather includes damaging winds, large hail, and heavy rain capable of producing localized flash flooding. Rainfall rates of 1 to 2 inches in 30 minutes could contribute to ongoing operational challenges at Denver International Airport.
Official Reports and Data Sources
The FAA confirmed the ground stop was lifted at 4 p.m., noting that delays continue as a result of the severe weather. The data on flight cancellations
and delays were provided by the FlightAware tracking website. The National Weather Service continues monitoring the storm conditions affecting the Front Range into the evening hours.
