Best Time to Fly IAH to ASE: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Aspen Pitkin County Sardy Field
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.9% of Houston (IAH) to Aspen (ASE) flights arrived on time (624 scheduled flights). That is 2.7 points below the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (81% on time) and July the worst month (59%).
The cancellation rate was 2.7% (US average 1.8%).
IAH 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 | 74.9% | 92 min | 2.7% | 624 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to ASE
On-time arrival % by scheduled departure hour (local time), 1,218 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 90.3% | 0.0% | 32 |
| 9am–10am | 67.6% | 3.0% | 268 |
| 10am–11am | 72.7% | 4.7% | 86 |
| 11am–12pm | 86.5% | 0.8% | 118 |
| 12pm–1pm | 65.5% | 4.3% | 329 |
| 4pm–5pm | 64.7% | 3.8% | 106 |
| 6pm–7pm | 77.9% | 8.1% | 260 |
| 7pm–8pm | Limited data | 19 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH 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) | Limited data | 7 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 53.1% | -23.6 pts | 9.4% | 117 |
| Summer peak (Jun 15 - Aug 15) | 64.0% | -12.6 pts | 2.5% | 235 |
| All other days | 76.6% | — | 4.1% | 859 |
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).