Southwest Airlines is the most reliable airline on the DAL to SDF route with a 77% on-time rate. Based on 674 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: DAL to SDF
Dallas to Louisville — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines77%
DAL to SDF Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 77% | 0.8% | 57m | 674 |
Route Overview
77%
Overall On-Time
60m
Avg Delay
0.9%
Cancel Rate
674
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.