SkyWest Airlines is the most reliable airline on the IAH to STL route with a 76% on-time rate, compared to United Airlines at 72%. Based on 247 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to STL
Houston to St. Louis — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines76%
United Airlines72%
IAH to STL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 76% | 0.8% | 92m | 247 |
| United AirlinesUAWorst | 72% | 1.2% | 65m | 1,787 |
Route Overview
73%
Overall On-Time
67m
Avg Delay
1.2%
Cancel Rate
2,062
Total Flights
Flying out of IAH? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.