Historical on-time performance
Chicago to Aspen
1,013 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–ASE arrive on time 54% of the time over the last 12 months.
On-time rate54%arrived within 15 min
p90 delay95 min1 in 10 flights is worse (tail risk)
Cancelled2.0%of scheduled flights
based on 955 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time54%Median5 minp9095 minCancel2.0%Flights955
Why flights run late
Delay causes
- Airline33%
- Weather17%
- Air traffic (NAS)32%
- Late aircraft18%
- 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 ORD → 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 50% to 63% on time.
- Mornings63% on time · p90 75 min · 1,119 flights
- Evenings63% on time · p90 50 min · 531 flights
- Afternoons61% on time · p90 95 min · 352 flights
- Middays50% on time · p90 105 min · 756 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 51% to 67% on time.
- Mondays67% on time · p90 70 min · 403 flights
- Wednesdays64% on time · p90 85 min · 396 flights
- Tuesdays64% on time · p90 65 min · 362 flights
- Thursdays60% on time · p90 70 min · 408 flights
- Sundays57% on time · p90 90 min · 408 flights
- Saturdays52% on time · p90 100 min · 409 flights
- Fridays51% on time · p90 80 min · 411 flights
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