Southwest Airlines is the most reliable airline on the STL to DAL route with a 79% on-time rate. Based on 7,344 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: STL to DAL
St. Louis to Dallas — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines79%
STL to DAL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 79% | 1.6% | 57m | 7,344 |
Route Overview
79%
Overall On-Time
56m
Avg Delay
1.6%
Cancel Rate
7,344
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.