Spirit Airlines is the most reliable airline on the IAH to BWI route with a 80% on-time rate, compared to Frontier Airlines at 54%. Based on 1,508 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to BWI
Houston to Baltimore — airline reliability comparison
On-Time Rate by Airline
Spirit Airlines80%
United Airlines78%
Frontier Airlines54%
IAH to BWI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 80% | 1.4% | 68m | 1,508 |
| United AirlinesUA | 78% | 1.5% | 63m | 2,465 |
| Frontier AirlinesF9Worst | 54% | 6.6% | 89m | 136 |
Route Overview
78%
Overall On-Time
66m
Avg Delay
1.5%
Cancel Rate
4,125
Total Flights
Flying out of IAH? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.