Southwest Airlines is the most reliable airline on the JAX to STL route with a 83% on-time rate. Based on 1,404 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: JAX to STL
Jacksonville to St. Louis — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines83%
JAX to STL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 83% | 0.7% | 64m | 1,404 |
Route Overview
83%
Overall On-Time
65m
Avg Delay
0.6%
Cancel Rate
1,404
Total Flights
Flying out of JAX? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.