Schedule: a typical summer Wednesday (the flights of Jul 29, 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
Wednesday, September 30
B6 303 · JFK → SJU
departs 8:00 PM ET · arrives 12:13 AM AT
Forecast issued Wed 10:00 PM ET · 2h after departure
Watch this flight
Other days
Wed 9/30
Today 60%
Mon 10/5 44%
Fri 10/9 34%
Odds over time
Arrive at SJU more than 15 minutes late?
33%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
39%
Arrive 1h+ late
13%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 33% · changed −1 pt in 24h
−1 pt
33%
Yes 33%
No 67%
Leave JFK more than 15 minutes late?
Calm-weather odds: 38% · changed −10 pts in 24h
−10 pts
39%
Yes 39%
No 61%
Arrive at SJU more than an hour late?
Calm-weather odds: 11% · changed +3 pts in 24h
+3 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SJU?
On time or early
66%
15–30 min late
9%
30 min–1 hour late
11%
1–2 hours late
7%
Over 2 hours late
6%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
B6's recent on-time record
↑
8pm departures from JFK are often late
↑
This flight has been late 39% of the time recently
↓
Mostly benign weather forecast at JFK
↓
Wednesdays in September are usually quieter than average
Weather at each end
JFK (origin)
Gusts 11 kt Ceiling 2,700 ft Visibility 10+ mi Precip none
SJU (destination)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip 0.07 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.