United Airlines is the most reliable airline on the STL to IAH route with a 78% on-time rate, compared to SkyWest Airlines at 77%. Based on 1,788 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: STL to IAH
St. Louis to Houston — airline reliability comparison
On-Time Rate by Airline
United Airlines78%
SkyWest Airlines77%
STL to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 78% | 1.7% | 76m | 1,788 |
| SkyWest AirlinesOOWorst | 77% | 1.2% | 100m | 248 |
Route Overview
78%
Overall On-Time
82m
Avg Delay
1.8%
Cancel Rate
2,067
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.