SkyWest Airlines is the most reliable airline on the GSP to IAH route with a 87% on-time rate, compared to United Airlines at 87%. Based on 43 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: GSP to IAH
Greenville to Houston — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines87%
United Airlines87%
GSP to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 87% | 6.7% | 48m | 43 |
| United AirlinesUAWorst | 87% | 1.2% | 113m | 787 |
Route Overview
87%
Overall On-Time
106m
Avg Delay
1.6%
Cancel Rate
833
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.