SkyWest Airlines is the most reliable airline on the IAH to SAT route with a 80% on-time rate, compared to United Airlines at 79%. Based on 439 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to SAT
Houston to San Antonio — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines80%
United Airlines79%
IAH to SAT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 80% | 1.4% | 58m | 439 |
| United AirlinesUAWorst | 79% | 1.4% | 64m | 7,565 |
Route Overview
79%
Overall On-Time
64m
Avg Delay
1.4%
Cancel Rate
8,109
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.