Southwest Airlines is the most reliable airline on the STL to MKE route with a 82% on-time rate. Based on 2,447 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: STL to MKE
St. Louis to Milwaukee — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines82%
STL to MKE Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 82% | 0.9% | 61m | 2,447 |
Route Overview
82%
Overall On-Time
60m
Avg Delay
0.9%
Cancel Rate
2,447
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.