Thunderstorms roaring across Colorado on Saturday afternoon brought Denver International Airport to a screeching halt, as the Federal Aviation Administration ordered a ground stop that stranded fliers, clogged gates, and left planes parked on the tarmac.
Arrivals and departures were paused while the storms moved through, and travelers reported long waits inside the terminals as the severe weather threat expanded across the eastern plains. Forecasters warned the same system could spit out large hail and damaging winds into the evening.
Flights Held, Delays Mount
The FAA issued the ground stop at 3:13 PM, and 199 flights at DEN were delayed by 3:55 PM, according to The Denver Post. The outlet reported that United accounted for 69 of those delays, Southwest 54, and regional carrier SkyWest 42, with airport weather sensors clocking wind gusts around 40 mph.
Agency officials told reporters there was a medium chance the ground stop could stretch past 4:30 PM, a polite way of saying travelers might be stuck a while.
FAA And Airport Response
Ground stops are one of the FAA's bluntest tools: they keep inbound flights from departing for an airport when weather or other problems cut the number of planes that can safely land. The agency's live airport-status page is the official spot for those operational advisories, and Denver was firmly in the red on Saturday afternoon.
Denver International Airport urged travelers to rely on airline apps and its own website for gate changes and rebooking information, directing passengers to the Denver International Airport site. For official federal advisories, fliers are pointed to the FAA airport-status page.
Forecasters Warn Of Severe Storms
The Storm Prediction Center had already flagged the central High Plains in its Day 1 outlook, saying stronger storms this afternoon and evening could deliver very large hail, damaging gusts and isolated tornadoes.
That outlook, along with local National Weather Service warnings, drove traffic managers to preemptively stop arrivals while the nastiest cells moved overhead. Forecasters said the eastern plains could see the worst of the weather threat into the night.
Why DEN Is Prone To Weather Delays
Denver's mix of heavy traffic and classic late-afternoon thunderstorms makes the airport particularly vulnerable to short, intense disruptions. FAA analysis shows DEN ranks among the Core 30 airports with the most ground stops, according to the agency's Air Traffic By the Numbers report from the FAA.
That report notes that ground stops are the most restrictive form of traffic management, used when an airport's acceptance rate effectively drops to zero or when conditions make arrivals unsafe. When that happens at a major hub like DEN, even a quick burst of severe weather can ripple across the national flight network.
What Travelers Should Expect
Anyone booked in or out of Denver International on Saturday afternoon should plan for delays and the possibility of cancellations. Airlines are steering customers to their apps and customer-service lines for rebooking and refund options.
The latest gate and status updates are typically posted on the Denver International Airport website, and local outlets are tracking the situation in real time, including CBS Colorado. Travelers with connections through Denver are being urged to build in extra time as the operation slowly unwinds from the afternoon ground stop.
