Southwest Airlines is the most reliable airline on the BWI to SAT route with a 75% on-time rate, compared to Spirit Airlines at 74%. Based on 2,690 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BWI to SAT
Baltimore to San Antonio — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines75%
Spirit Airlines74%
BWI to SAT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 75% | 1.0% | 51m | 2,690 |
| Spirit AirlinesNKWorst | 74% | 0.8% | 78m | 223 |
Route Overview
75%
Overall On-Time
54m
Avg Delay
1%
Cancel Rate
2,933
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.