Schedule: the flights that flew on Wednesday, Oct 21, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1780
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 28 Tomorrow
DL 1780 · BOS → SJU
departs 8:51 AM ET · arrives 12:58 PM AT
Forecast issued Tue 2:00 AM ET · 31h before departure
Watch this flight
Other days
Today 17%
Wed 10/28
Thu 10/29 14%
Fri 10/30 33%
Sat 10/31 25%
Sun 11/1 20%
Mon 11/2 16%
Odds over time
Arrive at SJU more than 15 minutes late?
15%
chance · ±2 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.4d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 12% · changed +1 pt in 24h
+1 pt
15%
Yes 15%
No 85%
Leave BOS more than 15 minutes late?
Calm-weather odds: 12% · changed +1 pt in 24h
+1 pt
13%
Yes 13%
No 87%
Arrive at SJU more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
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
84%
15–30 min late
7%
30 min–1 hour late
5%
1–2 hours late
2%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Mostly benign weather forecast at SJU
↑
This flight has been late 22% of the time recently
↑
Arrivals into SJU at that hour are often late
↓
Mostly benign weather forecast at BOS
↓
Wednesdays in October are usually quieter than average
Weather at each end
BOS (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJU (destination)
Gusts 14 kt Ceiling 2,500 ft 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.