United Airlines is the most reliable airline on the PDX to IAH route with a 87% on-time rate, compared to Alaska Airlines at 83%. Based on 3,089 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PDX to IAH
Portland to Houston — airline reliability comparison
On-Time Rate by Airline
United Airlines87%
Alaska Airlines83%
PDX to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 87% | 1.3% | 83m | 3,089 |
| Alaska AirlinesASWorst | 83% | 0.7% | 53m | 431 |
Route Overview
86%
Overall On-Time
80m
Avg Delay
1.3%
Cancel Rate
3,520
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.