Historical on-time performance
Chicago to Champaign
135 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–CMI arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled3.0%of scheduled flights
based on 924 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirOn-time70%Medianon timep9065 minCancel3.0%Flights924
Why flights run late
Delay causes
- Airline14%
- Weather16%
- Air traffic (NAS)17%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → CMI
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 67% to 82% on time.
- Afternoons82% on time · p90 25 min · 293 flights
- Mornings80% on time · p90 25 min · 338 flights
- Middays77% on time · p90 55 min · 505 flights
- Overnights67% on time · p90 55 min · 746 flights
- Evenings67% on time · p90 65 min · 384 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 79% on time.
- Saturdays79% on time · p90 30 min · 315 flights
- Tuesdays79% on time · p90 40 min · 263 flights
- Mondays75% on time · p90 40 min · 338 flights
- Wednesdays72% on time · p90 55 min · 321 flights
- Fridays71% on time · p90 55 min · 339 flights
- Sundays71% on time · p90 50 min · 348 flights
- Thursdays68% on time · p90 65 min · 342 flights
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