Route · DEN → ASE · 2020–2025 BTS data
Denver to Aspen
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DEN to ASE (Denver to Aspen) ranks #687 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.9%
- On-time
- -4.1 pts
- vs US avg
- 94 min
- Delay when late
- 14,210
- Flights
- #687 of 4927
- Corpus placement
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 |
DEN–ASE seasonal on-time pattern
Best: October (85.2%) · weakest: February (67.4%)
Strongest calendar month
October
85.2% on-time · ~189 flights/mo
Busiest calendar month
March
~251 flights/mo avg
Weakest calendar month
February
67.4% on-time · ~218 flights/mo
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.
DEN on-time profileASE - Aspen
Full on-time, delay-cause, and seasonal performance for Aspen, CO.
ASE on-time profileCompare the two airports
See DEN and ASE side by side on delays, cancellations, and reliability.
Compare DEN vs ASEOrigin-hub reliability standing
Softer reliability from DEN
Among 168 routes leaving DEN, only 27 (including this one) clear below 75% on-time, while 8 stay ≥85% and 133 sit mid-band. Travelers comparing DEN options should weigh this 74.9% print against those peers · fleet on-time rank #4484 of 4927.
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.
On the multi-year calendar, DEN–ASE peaks in October at 85.2% on-time while March carries the heaviest traffic (~251 flights per month) ; the softest month is February at 67.4%, a 17.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DEN to ASE rank among US routes by traffic? ▼
How often are flights delayed from DEN to ASE? ▼
What is the cancellation rate for DEN to ASE? ▼
How far is the flight from DEN to ASE? ▼
When is the best time to fly from DEN to ASE? ▼
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 DEN–ASE data
DEN–ASE sits 4.1 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare DEN and ASE airport profiles: delay causes and top routes differ even on the same corridor. DEN airport
- If your dates flex, October (85.2% on-time) beats February (67.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.9% 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.