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Route Reliability

COU → Denver

COU–DEN · 671 miles · COU Airport to Denver International Airport

88
Pretty Reliable
WanderNerd Reliability Score
88%
Arrive within 15 minutes
2 min
Average arrival delay
1.6%
Cancelled
248
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 88% of the time across 248 flights. No comparison to make.

What the data says

The 6–9 AM departure wins.

COU–DEN flights departing between 6–9 AM arrived on time 96% of the time, versus 86% between 9 AM–12 PM.

Skip Tuesday if you can.

COU–DEN flights arrived on time 91% of the time on Wednesdays. On Tuesdays: 82%.

Flights on this route

The breakdown

On-time by weekday
  • Mon85%(34 flights)
  • Tue82%(34 flights)
  • Wed91%(35 flights)
  • Thu91%(35 flights)
  • Fri89%(36 flights)
  • Sat86%(35 flights)
  • Sun91%(34 flights)
On-time by departure window
  • 6–9 AM96%(54 flights)
  • 9 AM–12 PM86%(189 flights)
On-time trend by month
94%
May

Oct 83% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202583%30
November 202583%30
December 202577%31
January 202697%29
February 202693%28
March 202680%30
April 202697%29
May 202694%31

Keep nerding

Based on 248 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.