Southwest Airlines is the most reliable airline on the SAT to BWI route with a 84% on-time rate, compared to Spirit Airlines at 73%. Based on 2,693 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SAT to BWI
San Antonio to Baltimore — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines84%
Spirit Airlines73%
SAT to BWI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 84% | 1.3% | 52m | 2,693 |
| Spirit AirlinesNKWorst | 73% | 1.7% | 80m | 224 |
Route Overview
83%
Overall On-Time
55m
Avg Delay
1.3%
Cancel Rate
2,937
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.