Historical on-time performance
Aspen to Denver
125 miData through May 2026Source: US DOT · BTS
Flights on ASE–DEN arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay85 min1 in 10 flights is worse (tail risk)
Cancelled5.2%of scheduled flights
based on 2,715 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time70%Medianon timep9085 minCancel5.2%Flights2,715
Why flights run late
Delay causes
- Airline22%
- Weather21%
- Air traffic (NAS)33%
- Late aircraft23%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline1%
- Weather86%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 140 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 ASE → DEN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 75% on time.
- Mornings75% on time · p90 50 min · 2,453 flights
- Middays71% on time · p90 70 min · 2,575 flights
- Evenings67% on time · p90 65 min · 1,089 flights
- Afternoons60% on time · p90 115 min · 2,045 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 77% on time.
- Wednesdays77% on time · p90 55 min · 1,134 flights
- Tuesdays76% on time · p90 50 min · 1,131 flights
- Thursdays71% on time · p90 70 min · 1,161 flights
- Sundays66% on time · p90 100 min · 1,189 flights
- Saturdays65% on time · p90 95 min · 1,185 flights
- Fridays65% on time · p90 90 min · 1,186 flights
- Mondays65% on time · p90 90 min · 1,176 flights
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