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Route Reliability

Cedar Rapids → Denver

CID–DEN · 692 miles · The Eastern Iowa Airport to Denver International Airport

75
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
15 min
Average arrival delay
1.3%
Cancelled
1,079
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines77%910 flights
  2. 2.Frontier Airlines75%169 flights

What the data says

Morning flights do better here.

CID–DEN flights departing between 3–6 AM arrived on time 100% of the time, versus 68% between 6–9 PM.

Sunday comes out ahead.

A small edge: 81% on time on Sundays against 74% on Saturdays.

Not much between United Airlines and Frontier Airlines.

On this route they all land within 75% to 77% on time. Pick on schedule and price.

Ticking up lately.

CID–DEN flights arrived on time 84% of the time over the last three months in the data, compared with 79% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon76%(161 flights)
  • Tue77%(133 flights)
  • Wed77%(137 flights)
  • Thu75%(173 flights)
  • Fri78%(161 flights)
  • Sat74%(117 flights)
  • Sun81%(178 flights)
On-time by departure window
  • 3–6 AM100%(11 flights)
  • 6–9 AM82%(271 flights)
  • 9 AM–12 PM87%(87 flights)
  • 12–3 PM96%(26 flights)
  • 3–6 PM77%(384 flights)
  • 6–9 PM68%(281 flights)
On-time trend by month
89%
May

Jun 61% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%100
July 202556%102
August 202570%100
September 202584%96
October 202583%102
November 202587%93
December 202567%73
January 202683%69
February 202687%63
March 202678%77
April 202684%77
May 202689%108

Keep nerding

Based on 1,079 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.