United Airlines is the most reliable airline on the IAH to SDF route with a 78% on-time rate. Based on 205 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to SDF
Houston to Louisville — airline reliability comparison
On-Time Rate by Airline
United Airlines78%
IAH to SDF Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 78% | 1.0% | 99m | 205 |
Route Overview
76%
Overall On-Time
94m
Avg Delay
0.9%
Cancel Rate
225
Total Flights
Flying out of IAH? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.