All flights in and out of Denver International Airport were grounded Monday afternoon as a large hail storm hit Denver, according to the Federal Aviation Administration.
The FAA issued the ground stop at DIA just after 1 p.m. Monday, according to the agency. The National Weather Service issued a severe thunderstorm watch for the Denver area and the Eastern Plains shortly before the ground delay took effect, which will be active until 8 p.m., and a separate severe thunderstorm warning will be in effect for the airport until 3 p.m. Monday.
Colorado weather: Severe thunderstorm warning issued for Denver, Aurora
As of 2:53 p.m., 454 flights had been delayed and four had been canceled, according to flight tracking software FlightAware. Roughly half of the delayed flights were trying to depart DIA, and half were scheduled to arrive at the Denver airport.
Delays included 168 United flights, 142 Southwest flights, 82 SkyWest flights, 19 Frontier flights, 12 Delta flights and 11 American Airlines flights, according to FlightAware. Nine other airlines delayed between one and five flights.
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SkyWest canceled three flights, and United canceled one, according to FlightAware.
This is a developing story and will be updated.
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