United Airlines is the most reliable airline on the IAH to CHS route with a 73% on-time rate, compared to SkyWest Airlines at 70%. Based on 997 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to CHS
Houston to Charleston — airline reliability comparison
On-Time Rate by Airline
United Airlines73%
SkyWest Airlines70%
IAH to CHS Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 73% | 1.8% | 76m | 997 |
| SkyWest AirlinesOOWorst | 70% | 1.1% | 47m | 79 |
Route Overview
72%
Overall On-Time
74m
Avg Delay
1.8%
Cancel Rate
1,088
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.