Houston (IAH) to Aspen (ASE): On-Time Performance
Data through May 2026
The biggest risk when flying IAH to ASE isn't a late arrival — it's not departing at all. 5% of scheduled flights on this route were cancelled, several times the typical US rate. When flights do go, 69% land on time, below the national average of 78%.
- On-time
- 69%
- arrived <15 min late
- Avg delay
- 29 min
- completed flights
- Cancelled
- 5.0%
- Flights/day
- 1.6
- last 12 months
- Duration
- 3h 8m
- scheduled
- Distance
- 913 mi
Monthly on-time trend
Best time to fly from IAH to ASE
Aim for departures around 7 a.m. (88% on-time); avoid 12 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 24 min |
| Tuesdaybest | 80% | 11 min |
| Wednesday | 76% | 22 min |
| Thursday | 72% | 30 min |
| Friday | 64% | 38 min |
| Saturday | 65% | 38 min |
| Sunday | 58% | 39 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft27%
- Airline operations42%
- National airspace system23%
- Weather8%
Frequently asked questions
- How often are flights from IAH to ASE delayed?
- 32% of IAH–ASE flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 29 minutes.
- What is the best time of day to fly from IAH to ASE?
- Departures around 7 a.m. have the best record (88% on-time), while departures around 12 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to ASE?
- The scheduled IAH–ASE flight time averages 3h 8m over 913 miles. Actual arrival times vary — flights on this route land 15+ minutes late 32% of the time.
- How often are IAH to ASE flights cancelled?
- 5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05 — several times the typical US rate, so consider earlier departures or backup options.
- What is the worst month to fly from IAH to ASE?
- June 2025 was the roughest month in this dataset, with only 42% of arrivals on time. The best was October 2024 at 94%. If your dates are flexible, that 51-point gap is worth planning around.
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Based on 1,218 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.