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Frontier Airlines and United Airlines aircraft are pictured from Denver International Airport’s A Terminal on Sunday, June 8, 2025, in Denver. (Andy Colwell, Special to The Colorado Sun)

Flights arriving into Denver International Airport were delayed Friday after an equipment outage at a facility that houses air traffic controllers.

“This is causing some arriving flights to be delayed an average of 38 minutes, not exceeding 1 hour and 34 minutes,” the Federal Aviation Administration said in an advisory Friday afternoon

The issue at the Denver Terminal Radar Control is requiring air traffic controllers to manually pass along flights to other controllers, Ian Gregor, a spokesperson for the FAA, said in an email. 

Because a traffic management program is delaying some arriving flights, travelers should also expect possible delays for departing flights, the FAA warned.

As of 4:20 p.m., 195 flights arriving into Denver International Airport were delayed, according to FlightAware.

It was not clear what caused the outage. The ground delay was issued about 3:30 p.m. and is expected to be lifted at 8 p.m., according to the advisory.  

Type of Story: News

Based on facts, either observed and verified directly by the reporter, or reported and verified from knowledgeable sources.

Olivia Prentzel covers breaking news and a wide range of other important issues impacting Coloradans for The Colorado Sun, where she has been a staff writer since 2021. At The Sun, she has covered wildfires, criminal justice, the environment,...