Route Reliability
Aspen → Denver
ASE–DEN · 125 miles · Aspen/Pitkin County Airport to Denver International Airport
- 74%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 5.2%
- Cancelled
- 2,715
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 74% of the time across 2,715 flights. No comparison to make.
What the data says
Morning-you made the right choice.
ASE–DEN flights departing between 6–9 AM arrived on time 80% of the time, versus 67% between 3–6 PM.
Skip Saturday if you can.
ASE–DEN flights arrived on time 79% of the time on Wednesdays. On Saturdays: 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.
ASE–DEN flights arrived on time 87% of the time over the last three months in the data, compared with 75% 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
- Mon72%(378 flights)
- Tue77%(361 flights)
- Wed79%(366 flights)
- Thu74%(370 flights)
- Fri73%(362 flights)
- Sat71%(362 flights)
- Sun74%(373 flights)
- 6–9 AM80%(572 flights)
- 9 AM–12 PM79%(619 flights)
- 12–3 PM72%(676 flights)
- 3–6 PM67%(474 flights)
- 6–9 PM68%(231 flights)
Jun 50% → May 88% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 50% | 222 |
| July 2025 | 56% | 228 |
| August 2025 | 71% | 234 |
| September 2025 | 81% | 226 |
| October 2025 | 74% | 211 |
| November 2025 | 86% | 172 |
| December 2025 | 70% | 255 |
| January 2026 | 81% | 232 |
| February 2026 | 74% | 225 |
| March 2026 | 86% | 277 |
| April 2026 | 86% | 215 |
| May 2026 | 88% | 75 |
Keep nerding
Based on 2,715 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.