Southwest Airlines is the most reliable airline on the AUS to BWI route with a 81% on-time rate, compared to Spirit Airlines at 77%. Based on 4,621 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: AUS to BWI
Austin to Baltimore — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines81%
Spirit Airlines77%
AUS to BWI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 81% | 1.2% | 49m | 4,621 |
| Spirit AirlinesNKWorst | 77% | 1.4% | 120m | 198 |
Route Overview
81%
Overall On-Time
53m
Avg Delay
1.2%
Cancel Rate
4,823
Total Flights
Flying out of AUS? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.