Best Time to Fly DEN to ASE: On-Time Stats by Hour & Airline
Denver International → Aspen Pitkin County Sardy Field
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.5% of Denver (DEN) to Aspen (ASE) flights arrived on time (2,724 scheduled flights). That is 3.1 points below the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
May has been the best month (85% on time) and Sunday the weakest day of the week (69%).
5.1% of flights were cancelled, versus 1.8% nationally.
DEN to ASE on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 74.5% | 97 min | 5.1% | 2,724 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to ASE
On-time arrival % by scheduled departure hour (local time), 5,582 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 84.8% | 0.9% | 318 |
| 8am–9am | 81.7% | 2.3% | 265 |
| 9am–10am | 77.4% | 3.5% | 575 |
| 10am–11am | 83.6% | 6.0% | 133 |
| 11am–12pm | 71.4% | 4.2% | 642 |
| 12pm–1pm | 66.9% | 8.4% | 154 |
| 1pm–2pm | 71.8% | 6.4% | 706 |
| 2pm–3pm | Limited data | 25 | |
| 3pm–4pm | 75.2% | 8.4% | 498 |
| 4pm–5pm | 72.9% | 5.3% | 304 |
| 5pm–6pm | 69.0% | 5.6% | 666 |
| 6pm–7pm | Limited data | 3 | |
| 7pm–8pm | 68.3% | 4.3% | 674 |
| 8pm–9pm | 76.3% | 5.5% | 617 |
| 9pm–10pm | Limited data | 2 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to ASE
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 69.1% | -9.2 pts | 12.0% | 92 |
| Christmas & New Year (Dec 20 - Jan 3) | 54.8% | -23.5 pts | 6.3% | 300 |
| Summer peak (Jun 15 - Aug 15) | 59.7% | -18.7 pts | 4.9% | 993 |
| All other days | 78.3% | — | 4.8% | 4,197 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).