The Federal Aviation Administration imposed a ground stop at Denver International Airport on August 15, 2026, due to severe thunderstorms impacting the Denver metro area. The ground stop, initiated because storms encroached on final approach routes, was lifted at 4 p.m. local time.
FlightAware reported that by 4:30 p.m., a total of 91 flights were canceled and 708 flights delayed at Denver International Airport. SkyWest Airlines experienced 38 cancellations and 121 delays, United Airlines had 34 cancellations and 265 delays, Southwest Airlines reported 14 cancellations and 211 delays, while Frontier Airlines canceled 5 flights and delayed 49. Flights arriving in
Denver faced an average delay of about two hours.
Weather Conditions and Storm Impact
The National Weather Service extended a severe thunderstorm watch for the Front Range until 9 p.m. on August 15, 2026. The storms brought heavy rain with rates potentially reaching one to two inches within 30 minutes, creating a risk of localized flash flooding. Associated hazards included possible damaging winds and large hail, which prompted airport officials to hold arrivals and impose the ground stop.
Ongoing Flight Disruptions
Flight delays heading into Denver were expected to continue until approximately 9:59 p.m. local time due to lingering storm conditions. The severe weather affected flights arriving from
across the contiguous United States, increasing delay times and cancellations throughout the afternoon and evening.
The FAA explained the ground stop was necessary given the thunderstorms’ encroachment on final approach corridors. Airlines adjusted operations accordingly during the weather disruption that caused significant delays and cancellations at Denver International Airport on August 15.
