Spirit Airlines is the most reliable airline on the SAT to SJU route with a 79% on-time rate. Based on 62 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SAT to SJU
San Antonio to San Juan — airline reliability comparison
On-Time Rate by Airline
Spirit Airlines79%
SAT to SJU Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 79% | 0.0% | 59m | 62 |
Route Overview
79%
Overall On-Time
61m
Avg Delay
0%
Cancel Rate
62
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.