Historical on-time performance
San Francisco to Aspen
848 miData through Dec 2025Source: US DOT · BTS
Flights on SFO–ASE arrive on time 67% of the time over the last 12 months.
On-time rate67%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled3.7%of scheduled flights
based on 323 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 timep9075 minCancel3.7%Flights323
Why flights run late
Delay causes
- Airline44%
- Weather11%
- Air traffic (NAS)14%
- Late aircraft31%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SFO → ASE
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 51% to 68% on time.
- Afternoons68% on time · p90 75 min · 576 flights
- Evenings68% on time · p90 20 min · 65 flights · limited
- Mornings51% on time · p90 115 min · 371 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 55% to 65% on time.
- Tuesdays65% on time · p90 80 min · 135 flights · limited
- Wednesdays64% on time · p90 55 min · 135 flights · limited
- Saturdays63% on time · p90 80 min · 160 flights · limited
- Thursdays61% on time · p90 75 min · 148 flights · limited
- Sundays61% on time · p90 115 min · 158 flights · limited
- Mondays61% on time · p90 85 min · 146 flights · limited
- Fridays55% on time · p90 100 min · 152 flights · limited
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