Historical on-time performance
Jacksonville to San Juan
1,288 miData through Dec 2025Source: US DOT · BTS
No flights recorded for last 12 months on this route.
By airline
How each carrier compares
No airline figures for this window yet.
Why flights run late
Delay causes
Delay-cause data appears once delayed flights are recorded for this window.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly JAX → SJU
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 54% to 80% on time.
- Mornings80% on time · p90 50 min · 170 flights · limited
- Middays73% on time · p90 60 min · 313 flights
- Afternoons66% on time · p90 165 min · 53 flights · limited
- Overnights54% on time · p90 105 min · 98 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 60% to 80% on time.
- Wednesdays80% on time · p90 65 min · 86 flights · limited
- Thursdays76% on time · p90 70 min · 99 flights · limited
- Tuesdays74% on time · p90 60 min · 80 flights · limited
- Sundays74% on time · p90 50 min · 102 flights · limited
- Fridays70% on time · p90 55 min · 104 flights · limited
- Mondays67% on time · p90 90 min · 103 flights · limited
- Saturdays60% on time · p90 105 min · 95 flights · limited
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