Spirit Airlines is the most reliable airline on the IAH to PIT route with a 88% on-time rate, compared to United Airlines at 79%. Based on 85 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to PIT
Houston to Pittsburgh — airline reliability comparison
On-Time Rate by Airline
Spirit Airlines88%
SkyWest Airlines85%
United Airlines79%
IAH to PIT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 88% | 8.7% | 54m | 85 |
| SkyWest AirlinesOO | 85% | 0.0% | 75m | 46 |
| United AirlinesUAWorst | 79% | 1.0% | 65m | 2,262 |
Route Overview
79%
Overall On-Time
65m
Avg Delay
1.2%
Cancel Rate
2,414
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.