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Route Reliability

Denver → Aspen

DEN–ASE · 125 miles · Denver International Airport to Aspen/Pitkin County Airport

53
A Little Dicey
WanderNerd Reliability Score
75%
Arrive within 15 minutes
18 min
Average arrival delay
5.2%
Cancelled
2,717
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 75% of the time across 2,717 flights. No comparison to make.

What the data says

Morning-you made the right choice.

DEN–ASE flights departing between 6–9 AM arrived on time 85% of the time, versus 71% between 12–3 PM.

Friday is doing you no favors.

DEN–ASE flights arrived on time 81% of the time on Tuesdays. On Fridays: 71%.

Keep a backup plan handy.

This route was cancelled 5.2% of the time. Typical for U.S. flights is around 1–2%.

Trending in the right direction.

DEN–ASE flights arrived on time 84% of the time over the last three months in the data, compared with 73% 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
  • Mon75%(376 flights)
  • Tue81%(359 flights)
  • Wed79%(359 flights)
  • Thu73%(364 flights)
  • Fri71%(349 flights)
  • Sat73%(361 flights)
  • Sun72%(374 flights)
On-time by departure window
  • 6–9 AM85%(234 flights)
  • 9 AM–12 PM77%(616 flights)
  • 12–3 PM71%(402 flights)
  • 3–6 PM73%(699 flights)
  • 6–9 PM73%(589 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
83%
May

Jun 57% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%222
July 202560%222
August 202564%230
September 202581%223
October 202583%207
November 202588%170
December 202564%251
January 202681%226
February 202674%224
March 202684%279
April 202686%211
May 202683%77

Keep nerding

Based on 2,717 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.