Spirit Airlines is the most reliable airline on the BWI to AUS route with a 82% on-time rate, compared to Southwest Airlines at 77%. Based on 198 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BWI to AUS
Baltimore to Austin — airline reliability comparison
On-Time Rate by Airline
Spirit Airlines82%
Southwest Airlines77%
BWI to AUS Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 82% | 1.0% | 134m | 198 |
| Southwest AirlinesWNWorst | 77% | 1.1% | 52m | 4,626 |
Route Overview
77%
Overall On-Time
53m
Avg Delay
1%
Cancel Rate
4,828
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.