Historical on-time performance
Chicago to Springfield
174 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–SPI arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights
based on 405 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirbestOn-time82%Medianon timep9030 minCancel1.9%Flights375
- SkyWest AirlinesOn-time43%Median15 minp90235 minCancel6.7%Flights30
Why flights run late
Delay causes
- Airline28%
- Weather6%
- Air traffic (NAS)17%
- Late aircraft48%
- 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 → SPI
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 97% on time.
- Mornings97% on time · p90 5 min · 63 flights · limited
- Middays89% on time · p90 10 min · 173 flights · limited
- Evenings74% on time · p90 35 min · 145 flights · limited
- Overnights67% on time · p90 100 min · 75 flights · limited
- Afternoons56% on time · p90 120 min · 160 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 81% on time.
- Tuesdays81% on time · p90 35 min · 81 flights · limited
- Wednesdays78% on time · p90 45 min · 83 flights · limited
- Mondays78% on time · p90 50 min · 94 flights · limited
- Sundays77% on time · p90 70 min · 93 flights · limited
- Fridays72% on time · p90 50 min · 93 flights · limited
- Saturdays70% on time · p90 45 min · 84 flights · limited
- Thursdays68% on time · p90 90 min · 88 flights · limited
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