is the most reliable airline on the IAH to PHX route with a 87% on-time rate, compared to Frontier Airlines at 64%. Based on 324 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to PHX
Houston to Phoenix — airline reliability comparison
On-Time Rate by Airline
87%
American Airlines83%
SkyWest Airlines82%
United Airlines80%
Frontier Airlines64%
IAH to PHX Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| MQBest | 87% | 2.1% | 78m | 324 |
| American AirlinesAA | 83% | 1.1% | 150m | 1,664 |
| SkyWest AirlinesOO | 82% | 1.2% | 76m | 860 |
| United AirlinesUA | 80% | 0.8% | 64m | 5,933 |
| Frontier AirlinesF9Worst | 64% | 1.2% | 79m | 882 |
Route Overview
80%
Overall On-Time
82m
Avg Delay
1%
Cancel Rate
9,745
Total Flights
Flying out of IAH? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.