Southwest Airlines is the most reliable airline on the CHS to STL route with a 76% on-time rate. Based on 277 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: CHS to STL
Charleston to St. Louis — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines76%
CHS to STL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 76% | 0.3% | 68m | 277 |
Route Overview
77%
Overall On-Time
68m
Avg Delay
0.4%
Cancel Rate
277
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.