Route Reliability
San Juan → San Antonio
SJU–SAT · 2,181 miles · Luis Muñoz Marín International Airport to San Antonio International Airport
81
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 1.4%
- Cancelled
- 72
- Flights in the data
Data through May 2026.
Spirit Airlines is the only airline in this data on this route, arriving on time 84% of the time across 72 flights. No comparison to make.
What the data says
The 6–9 AM departure wins.
SJU–SAT flights departing between 6–9 AM arrived on time 91% of the time, versus 80% between 9 AM–12 PM.
Any day works.
Weekday differences are small here: 85% to 87% on time across the week.
Flights on this route
The breakdown
- Mon87%(30 flights)
- Tue—(2 flights)
- Wed—(8 flights)
- Thu—(1 flights)
- Fri85%(27 flights)
- Sat—(0 flights)
- Sun—(2 flights)
- 6–9 AM91%(21 flights)
- 9 AM–12 PM80%(39 flights)
- 3–6 PM—(5 flights)
- 6–9 PM—(5 flights)
Keep nerding
Based on 72 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.