Historical on-time performance
Columbus to St. Louis
410 miData through Dec 2025Source: US DOT · BTS
Flights on CMH–STL arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 667 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time84%Medianon timep9025 minCancel1.0%Flights667
Why flights run late
Delay causes
- Airline14%
- Weather2%
- Air traffic (NAS)10%
- Late aircraft75%
- 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 CMH → STL
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 61% to 93% on time.
- Mornings93% on time · p90 5 min · 936 flights
- Middays92% on time · p90 10 min · 59 flights · limited
- Evenings82% on time · p90 30 min · 264 flights
- Overnights68% on time · p90 45 min · 631 flights
- Afternoons61% on time · p90 80 min · 61 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 85% on time.
- Wednesdays85% on time · p90 25 min · 308 flights
- Saturdays85% on time · p90 30 min · 130 flights · limited
- Tuesdays85% on time · p90 25 min · 310 flights
- Mondays83% on time · p90 30 min · 315 flights
- Fridays82% on time · p90 30 min · 311 flights
- Thursdays80% on time · p90 30 min · 308 flights
- Sundays78% on time · p90 30 min · 269 flights
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