Historical on-time performance
Chicago to St. Louis
258 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–STL arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
Median delayon timetypical arrival
p90 delay60 min1 in 10 flights is worsetail risk
Cancelled2.0%of scheduled flights
based on 2,614 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time77%Medianon timep9050 minCancel2.5%Flights510
- Envoy AirbestOn-time77%Medianon timep9035 minCancel1.9%Flights474
- SkyWest AirlinesOn-time66%Medianon timep9085 minCancel2.8%Flights637
- American AirlinesOn-time67%Medianon timep9075 minCancel1.8%Flights448
- United AirlinesOn-time75%Medianon timep9050 minCancel0.7%Flights545
Why flights run late
Delay causes
- Airline37%
- Weather11%
- Air traffic (NAS)13%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
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