Schedule: a typical Sunday (the flights of Jul 26, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
JETBLUE · FLIGHT B6 1603SCHEDULED · TYPICAL ODDS
B6 1603 · JFK → SJU
departs 8:29 AM ET · arrives 12:27 PM AT
Forecast issued Tue 6:00 PM ET · 110h before departure
Typical odds
Too early for a weather forecast — these are typical odds for this flight on a Sunday in October, from the weather this date has had in past years (the range shows how much they varied). They’ll switch to forecast-based odds about 3 days before departure.
Odds over time
Arrive at SJU more than 15 minutes late?
25%chance · ±7 pts+0 pts · 24h
HOW SURE WE ARELow. This is mostly a starting point from history; weather forecasts haven't kicked in yet.
How late will it get to SJU?
On time or early
74%
15–30 min late
8%
30 min–1 hour late
8%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.