United Airlines is the most reliable airline on the BWI to IAH route with a 85% on-time rate, compared to Frontier Airlines at 69%. Based on 2,465 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BWI to IAH
Baltimore to Houston — airline reliability comparison
On-Time Rate by Airline
United Airlines85%
Spirit Airlines76%
Frontier Airlines69%
BWI to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 85% | 1.1% | 63m | 2,465 |
| Spirit AirlinesNK | 76% | 1.8% | 83m | 1,511 |
| Frontier AirlinesF9Worst | 69% | 8.5% | 74m | 136 |
Route Overview
81%
Overall On-Time
78m
Avg Delay
1.5%
Cancel Rate
4,127
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.