Route · DEN → ASE · 2020–2025 BTS data
Denver to Aspen
The DEN–ASE corridor (Denver, CO → Aspen, CO) runs behind the national average, served by 1 carrier across roughly 125 miles.
Data updated 2026-06-13
- 74.9%
- On-time
- -4.1 pts
- vs US avg
- 94 min
- Delay when late
- 14,210
- Flights
Cancelled
5.2%
Best Month
Nov 2025 88%
Worst Month
Jun 2025 58%
Distance
125 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 270 | 91 | 14 | 5 | OO |
| Nov 2025 | 179 | 21 | 8 | 1 | OO |
| Oct 2025 | 210 | 35 | 0 | 3 | OO |
| Sep 2025 | 226 | 44 | 0 | 3 | OO |
| Aug 2025 | 244 | 86 | 10 | 4 | OO |
| Jul 2025 | 245 | 89 | 16 | 7 | OO |
| Jun 2025 | 234 | 98 | 7 | 5 | OO |
| May 2025 | 32 | 3 | 0 | 0 | OO |
| Apr 2025 | 250 | 47 | 12 | 6 | OO |
| Mar 2025 | 302 | 70 | 26 | 8 | OO |
| Feb 2025 | 264 | 75 | 26 | 3 | OO |
| Jan 2025 | 285 | 75 | 7 | 0 | OO |
| Dec 2024 | 275 | 64 | 16 | 2 | OO |
| Nov 2024 | 235 | 52 | 26 | 7 | OO |
| Oct 2024 | 248 | 37 | 2 | 1 | OO |
| Sep 2024 | 240 | 45 | 3 | 2 | OO |
| Aug 2024 | 248 | 73 | 0 | 0 | OO |
| Jul 2024 | 245 | 57 | 2 | 1 | OO |
| Jun 2024 | 240 | 49 | 23 | 1 | OO |
| May 2024 | 104 | 22 | 2 | 3 | OO |
| Apr 2024 | 247 | 48 | 14 | 4 | OO |
| Mar 2024 | 281 | 87 | 30 | 2 | OO |
| Feb 2024 | 239 | 78 | 25 | 2 | OO |
| Jan 2024 | 246 | 79 | 22 | 1 | OO |
Cancellation Rate
5.2%
291 of 5,589 flights
Diversion Rate
1.3%
71 of 5,589 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Origin airport →ASE - Aspen
Full on-time, delay-cause, and seasonal performance for Aspen, CO.
Destination airport →Compare the two airports
See DEN and ASE side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to DEN–ASE.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About DEN to ASE
On-time performance on the DEN to ASE pairing (Denver to Aspen) trails a chunk of the network: 74.9% of 14,210 tracked flights arrived on schedule, with a 93.7-minute average delay on the ones that ran late. The route spans about 125 miles across 1 carrier. Cancellations over the trailing 24 months hit 5.2% (291 of 5,589 flights), with 1.3% diverted.
The monthly split is wide on this route: Nov 2025 posted the strongest performance at 88% on-time, while Jun 2025 came in at just 58% - a 30-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.