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Route Reliability

Colorado Springs → Denver

COS–DEN · 73 miles · Colorado Springs Airport to Denver International Airport

80
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
7 min
Average arrival delay
1.5%
Cancelled
5,059
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines79%3,904 flights
  2. 2.Southwest Airlines76%1,155 flights

What the data says

Morning-you made the right choice.

COS–DEN flights departing between 3–6 AM arrived on time 88% of the time, versus 61% between 3–6 PM.

Saturday has been the better bet.

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

Not much between United Airlines and Southwest Airlines.

On this route they all land within 76% to 79% on time. Pick on schedule and price.

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
  • Mon77%(713 flights)
  • Tue79%(681 flights)
  • Wed77%(703 flights)
  • Thu77%(711 flights)
  • Fri74%(708 flights)
  • Sat81%(706 flights)
  • Sun80%(761 flights)
On-time by departure window
  • 3–6 AM88%(263 flights)
  • 6–9 AM87%(1454 flights)
  • 9 AM–12 PM82%(1280 flights)
  • 12–3 PM82%(675 flights)
  • 3–6 PM61%(968 flights)
  • 6–9 PM62%(343 flights)
On-time trend by month
85%
May

Jun 64% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%447
July 202564%452
August 202568%464
September 202581%442
October 202580%450
November 202587%391
December 202578%436
January 202684%384
February 202684%346
March 202681%384
April 202686%362
May 202685%425

Keep nerding

Based on 5,059 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.