United Airlines is the most reliable airline on the CLT to IAH route with a 81% on-time rate, compared to Frontier Airlines at 64%. Based on 2,109 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: CLT to IAH
Charlotte to Houston — airline reliability comparison
On-Time Rate by Airline
United Airlines81%
SkyWest Airlines80%
Spirit Airlines75%
American Airlines75%
Frontier Airlines64%
CLT to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 81% | 1.6% | 93m | 2,109 |
| SkyWest AirlinesOO | 80% | 1.6% | 78m | 134 |
| Spirit AirlinesNK | 75% | 2.7% | 54m | 129 |
| American AirlinesAA | 75% | 1.6% | 72m | 5,755 |
| Frontier AirlinesF9Worst | 64% | 4.3% | 68m | 395 |
Route Overview
75%
Overall On-Time
73m
Avg Delay
1.8%
Cancel Rate
8,581
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.