Schedule: the flights that flew on Wednesday, Oct 7, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1877
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 14 Tomorrow
DL 1877 · SJU → JFK
departs 1:16 PM AT · arrives 5:05 PM ET
Forecast issued Mon 11:00 PM ET · 38h before departure
Watch this flight
Other days
Today 9%
Wed 10/14
Thu 10/15 17%
Fri 10/16 22%
Sat 10/17 20%
Sun 10/18 20%
Mon 10/19 13%
Odds over time
Arrive at JFK more than 15 minutes late?
9%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
9%
Leave 15+ late
8%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at JFK more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Leave SJU more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Arrive at JFK 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 JFK?
On time or early
91%
15–30 min late
3%
30 min–1 hour late
3%
1–2 hours late
2%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into JFK at that hour are often late
↑
Other factors
↑
JFK is busy at that time
↓
Wednesdays in October are usually quieter than average
↓
Mostly benign weather forecast at JFK
Weather at each end
SJU (origin)
Gusts 13 kt Ceiling 1,600 ft Visibility 10+ mi Precip 0.04 in
JFK (destination)
Gusts 17 kt Ceiling 4,400 ft Visibility 9 mi Precip none
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.