Historical on-time performance
Charleston to St. Louis
706 miData through Dec 2025Source: US DOT · BTS
Flights on CHS–STL arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 92 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time73%Medianon timep9070 minCancel0.0%Flights92
Why flights run late
Delay causes
- Airline18%
- Weather3%
- Air traffic (NAS)3%
- Late aircraft76%
- 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 CHS → STL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 88% on time.
- Middays88% on time · p90 15 min · 74 flights · limited
- Evenings73% on time · p90 40 min · 88 flights · limited
- Afternoons63% on time · p90 85 min · 63 flights · limited
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