Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
JETBLUE · FLIGHT B6 561
SCHEDULED · TYPICAL SCHEDULE
B6 561 · BOS → SJU
departs 10:11 PM ET · arrives 2:11 AM AT
Forecast issued Wed 7:00 PM ET · 51h before departure
Odds over time
Arrive at SJU more than 15 minutes late?
52%
chance · ±9 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
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How late will it get to SJU?
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On time or early
47%
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15–30 min late
7%
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30 min–1 hour late
20%
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1–2 hours late
12%
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Over 2 hours late
12%
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Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.