Route · ASE → DEN · 2020–2025 BTS data
Aspen to Denver
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ASE to DEN (Aspen to Denver) ranks #688 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.8%
- On-time
- -4.2 pts
- vs US avg
- 89 min
- Delay when late
- 14,206
- Flights
- #688 of 4927
- Corpus placement
Cancelled
5.4%
Best Month
Nov 2025 86%
Worst Month
Jun 2025 52%
Distance
125 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 269 | 78 | 14 | 0 | OO |
| Nov 2025 | 179 | 25 | 7 | 0 | OO |
| Oct 2025 | 211 | 54 | 0 | 0 | OO |
| Sep 2025 | 226 | 49 | 0 | 0 | OO |
| Aug 2025 | 244 | 72 | 9 | 1 | OO |
| Jul 2025 | 245 | 102 | 16 | 1 | OO |
| Jun 2025 | 231 | 111 | 9 | 0 | OO |
| May 2025 | 35 | 8 | 0 | 0 | OO |
| Apr 2025 | 250 | 84 | 12 | 0 | OO |
| Mar 2025 | 302 | 68 | 26 | 0 | OO |
| Feb 2025 | 264 | 60 | 26 | 0 | OO |
| Jan 2025 | 285 | 80 | 9 | 0 | OO |
| Dec 2024 | 274 | 57 | 19 | 0 | OO |
| Nov 2024 | 235 | 49 | 25 | 0 | OO |
| Oct 2024 | 248 | 45 | 2 | 0 | OO |
| Sep 2024 | 240 | 62 | 2 | 1 | OO |
| Aug 2024 | 248 | 73 | 0 | 1 | OO |
| Jul 2024 | 245 | 52 | 2 | 0 | OO |
| Jun 2024 | 240 | 71 | 22 | 0 | OO |
| May 2024 | 104 | 29 | 5 | 0 | OO |
| Apr 2024 | 250 | 42 | 16 | 1 | OO |
| Mar 2024 | 282 | 87 | 35 | 0 | OO |
| Feb 2024 | 239 | 79 | 25 | 1 | OO |
| Jan 2024 | 247 | 75 | 22 | 0 | OO |
ASE–DEN seasonal on-time pattern
Best: November (84.1%) · weakest: June (67.6%)
Strongest calendar month
November
84.1% on-time · ~168 flights/mo
Busiest calendar month
March
~252 flights/mo avg
Weakest calendar month
June
67.6% on-time · ~194 flights/mo
Cancellation Rate
5.4%
303 of 5,593 flights
Diversion Rate
0.1%
6 of 5,593 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ASE - Aspen
Full on-time, delay-cause, and seasonal performance for Aspen, CO.
ASE on-time profileDEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
DEN on-time profileCompare the two airports
See ASE and DEN side by side on delays, cancellations, and reliability.
Compare ASE vs DENOrigin-hub reliability standing
Softer reliability from ASE
Among 7 routes leaving ASE, only 6 (including this one) clear below 75% on-time, while 0 stay ≥85% and 1 sit mid-band. Travelers comparing ASE options should weigh this 74.8% print against those peers · fleet on-time rank #4495 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ASE–DEN.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About ASE to DEN
On-time performance on the ASE to DEN pairing (Aspen to Denver) trails a chunk of the network: 74.8% of 14,206 tracked flights arrived on schedule, with a 88.9-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 5.4% (303 of 5,593 flights), with 0.1% diverted.
The monthly split is wide on this route: Nov 2025 posted the strongest performance at 86% on-time, while Jun 2025 came in at just 52% - a 34-point swing worth factoring into travel timing.
On the multi-year calendar, ASE–DEN peaks in November at 84.1% on-time while March carries the heaviest traffic (~252 flights per month) ; the softest month is June at 67.6%, a 16.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ASE to DEN rank among US routes by traffic? ▼
How often are flights delayed from ASE to DEN? ▼
What is the cancellation rate for ASE to DEN? ▼
How far is the flight from ASE to DEN? ▼
When is the best time to fly from ASE to DEN? ▼
Airports on this route
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.
Using ASE–DEN data
ASE–DEN sits 4.2 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare ASE and DEN airport profiles: delay causes and top routes differ even on the same corridor. ASE airport
- If your dates flex, November (84.1% on-time) beats June (67.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.8% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.