B6 561 · BOS → SJU

departs 6:30 PM ET · arrives 10:31 PM AT

Forecast issued Thu 1:00 AM ET · 18h before departure

Arrive at SJU more than 15 minutes late?

56% chance · ±6 pts +10 pts · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to SJU?

On time or early
44%
15–30 min late
21%
30 min–1 hour late
16%
1–2 hours late
14%
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

↑ This flight has been late 46% of the time recently

↑ 6pm departures from BOS are often late

↓ Mostly benign weather forecast at BOS

↓ Thursdays in October are usually quieter than average

Weather at each end

BOS (origin) Gusts16 kt Ceiling10,000 ft Visibility10+ mi Precipnone

SJU (destination) Gusts15 kt Ceiling1,600 ft Visibility10+ mi Precip0.57 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.

B6 561 · BOS → SJU

Odds over time

How late will it get to SJU?