Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
JETBLUE · FLIGHT B6 303
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
B6 303 · JFK → SJU
departs 8:00 PM ET · arrives 12:13 AM AT
Forecast issued Fri 7:00 AM ET · 61h before departure
Watch this flight
Other days
Today 60%
Sat 10/3 37%
Sun 10/4
Mon 10/5 33%
Tue 10/6 29%
Wed 10/7 34%
Odds over time
Arrive at SJU more than 15 minutes late?
60%
chance · ±6 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
60%
Leave 15+ late
64%
Arrive 1h+ late
34%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
5.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 31% · changed – in 24h
–
60%
Yes 60%
No 40%
Leave JFK more than 15 minutes late?
Calm-weather odds: 39% · changed – in 24h
–
64%
Yes 64%
No 36%
Arrive at SJU more than an hour late?
Calm-weather odds: 9% · changed – in 24h
–
34%
Yes 34%
No 66%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
2%
Yes 2%
No 98%
How late will it get to SJU?
On time or early
39%
15–30 min late
8%
30 min–1 hour late
18%
1–2 hours late
21%
Over 2 hours late
13%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 300 ft, visibility down to 2 mi forecast at JFK that day
↑
8pm departures from JFK are often late
↑
B6's recent on-time record
↓
Sundays in October are usually quieter than average
↓
JFK is quiet at that time
Weather at each end
JFK (origin)
Gusts 17 kt Ceiling 300 ft Visibility 2 mi Precip 0.13 in
SJU (destination)
Gusts 13 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.05 in
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.