Aspen Pitkin County Sardy Field (ASE) Delays and On-Time Departures
Aspen, CO · ranked 322nd of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
70.6% of the 8,072 flights scheduled to depart Aspen (ASE) in the last 12 months left on time, 6.8 points below the US average of 77.4%.
That ranks 322nd of 333 US airports tracked on this site, with 5.9% of departures cancelled.
Over 24 months, Wednesday was the most reliable day (76% on time) and December the worst month (61%).
Best time of day to fly out of Aspen (ASE)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 81.3% | 3.7% | 1,952 |
| 8am–9am | 78.4% | 3.8% | 764 |
| 9am–10am | 72.8% | 2.7% | 1,059 |
| 10am–11am | 75.9% | 5.1% | 1,130 |
| 11am–12pm | 69.1% | 4.8% | 1,259 |
| 12pm–1pm | 64.8% | 5.8% | 2,521 |
| 1pm–2pm | 63.3% | 6.6% | 2,146 |
| 2pm–3pm | 61.5% | 7.8% | 1,198 |
| 3pm–4pm | 59.4% | 8.8% | 1,243 |
| 4pm–5pm | 57.7% | 9.6% | 842 |
| 5pm–6pm | 75.1% | 7.8% | 410 |
| 6pm–7pm | 68.3% | 8.7% | 715 |
| 7pm–8pm | 59.8% | 9.1% | 416 |
| 8pm–9pm | 86.9% | 5.4% | 185 |
Airlines at ASE ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 70.6% | 71.1% | 5.9% | 8,072 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of ASE
On-time departures by day, 24 months.
Best month to fly out of ASE
On-time departures by month, 24 months.
Holiday travel at Aspen (ASE)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 73.8% | +1.7 pts | 12.7% | 166 |
| Christmas & New Year (Dec 20 - Jan 3) | 44.0% | -28.1 pts | 7.5% | 1,109 |
| Summer peak (Jun 15 - Aug 15) | 63.4% | -8.7 pts | 5.5% | 2,832 |
| All other days | 72.1% | — | 6.0% | 11,733 |
Monthly on-time departure trend at ASE
On-time departure % each month, with the 12-month US average for reference.
Routes from Aspen (ASE)
Every route from ASE with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| ASE → Denver (DEN) | 76.3% | 5.0% | 2,725 |
| ASE → Los Angeles (LAX) | 72.6% | 6.8% | 1,235 |
| ASE → Dallas/Fort Worth (DFW) | 66.7% | 7.2% | 1,185 |
| ASE → Chicago (ORD) | 63.8% | 5.8% | 1,133 |
| ASE → Houston (IAH) | 74.3% | 4.6% | 626 |
| ASE → Atlanta (ATL) | 74.8% | 3.6% | 450 |
| ASE → San Francisco (SFO) | 61.8% | 5.6% | 376 |
| ASE → Austin (AUS) | 60.4% | 10.9% | 184 |