Historical on-time performance
Denver to Aspen
125 miData through May 2026Source: US DOT · BTS
Flights on DEN–ASE arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled5.2%of scheduled flights
based on 2,717 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time69%Medianon timep9065 minCancel5.2%Flights2,717
Why flights run late
Delay causes
- Airline21%
- Weather20%
- Air traffic (NAS)35%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline1%
- Weather87%
- Air traffic (NAS)12%
- 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 DEN → ASE
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 — 77% on time.
- Mornings77% on time · p90 45 min · 1,680 flights
- Overnights70% on time · p90 60 min · 851 flights
- Afternoons69% on time · p90 60 min · 1,160 flights
- Middays66% on time · p90 70 min · 2,416 flights
- Evenings66% on time · p90 75 min · 2,055 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 76% on time.
- Wednesdays76% on time · p90 45 min · 1,137 flights
- Tuesdays75% on time · p90 45 min · 1,131 flights
- Mondays69% on time · p90 65 min · 1,169 flights
- Thursdays67% on time · p90 65 min · 1,166 flights
- Saturdays66% on time · p90 70 min · 1,184 flights
- Sundays66% on time · p90 85 min · 1,187 flights
- Fridays65% on time · p90 65 min · 1,188 flights
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