Spirit Airlines is the most reliable airline on the BWI to SAN route with a 85% on-time rate, compared to Southwest Airlines at 75%. Based on 107 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BWI to SAN
Baltimore to San Diego — airline reliability comparison
On-Time Rate by Airline
Spirit Airlines85%
Southwest Airlines75%
BWI to SAN Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 85% | 0.0% | 83m | 107 |
| Southwest AirlinesWNWorst | 75% | 1.1% | 49m | 3,144 |
Route Overview
75%
Overall On-Time
51m
Avg Delay
1.1%
Cancel Rate
3,253
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.