Historical on-time performance
Houston to Aspen
913 miData through May 2026Source: US DOT · BTS
Flights on IAH–ASE arrive on time 67% of the time over the last 12 months.
On-time rate67%arrived within 15 min
p90 delay90 min1 in 10 flights is worse (tail risk)
Cancelled3.8%of scheduled flights
based on 532 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time67%Medianon timep9090 minCancel3.8%Flights532
Why flights run late
Delay causes
- Airline38%
- Weather10%
- Air traffic (NAS)38%
- Late aircraft14%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 20 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → ASE
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 58% to 67% on time.
- Mornings67% on time · p90 95 min · 259 flights
- Evenings64% on time · p90 75 min · 454 flights
- Middays62% on time · p90 90 min · 936 flights
- Afternoons58% on time · p90 110 min · 163 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 56% to 71% on time.
- Wednesdays71% on time · p90 65 min · 245 flights
- Tuesdays71% on time · p90 60 min · 223 flights
- Thursdays67% on time · p90 100 min · 267 flights
- Mondays62% on time · p90 70 min · 255 flights
- Fridays60% on time · p90 90 min · 277 flights
- Saturdays56% on time · p90 110 min · 280 flights
- Sundays56% on time · p90 110 min · 265 flights
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