Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
JETBLUE · FLIGHT B6 561
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
B6 561 · BOS → SJU
departs 10:32 PM ET · arrives 2:32 AM AT
Forecast issued Thu 7:00 PM ET · 52h before departure
Watch this flight
Other days
Today 52%
Fri 10/2 46%
Sat 10/3
Sun 10/4 47%
Mon 10/5 40%
Tue 10/6 37%
Wed 10/7 48%
Odds over time
Arrive at SJU more than 15 minutes late?
33%
chance · ±8 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
45%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.0d
Now
1d
12h
6h
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 27% · changed – in 24h
–
33%
Yes 33%
No 67%
Leave BOS more than 15 minutes late?
Calm-weather odds: 33% · changed – in 24h
–
45%
Yes 45%
No 55%
Arrive at SJU more than an hour late?
Calm-weather odds: 9% · changed – in 24h
–
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SJU?
On time or early
66%
15–30 min late
11%
30 min–1 hour late
11%
1–2 hours late
6%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 46% of the time recently
↑
B6's recent on-time record
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at BOS
↓
Saturdays in October are usually quieter than average
Weather at each end
BOS (origin)
Gusts 12 kt Ceiling 6,333 ft Visibility 10+ mi Precip none
SJU (destination)
Gusts 13 kt Ceiling 4,200 ft Visibility 10+ mi Precip 0.04 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.