Schedule: the flights that flew on Friday, Oct 23, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 8771
SCHEDULED · TYPICAL SCHEDULE
Friday, October 30
DL 8771 · JFK → ATL
departs 6:27 PM ET · arrives 8:47 PM ET
Forecast issued Fri 11:00 PM ET · 4h after departure
Watch this flight
Odds over time
Arrive at ATL more than 15 minutes late?
41%
chance · ±0 pts
+8 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
41%
Leave 15+ late
31%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.8d
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 41% · changed +8 pts in 24h
+8 pts
41%
Yes 41%
No 59%
Leave JFK more than 15 minutes late?
Calm-weather odds: 31% · changed +3 pts in 24h
+3 pts
31%
Yes 31%
No 69%
Arrive at ATL more than an hour late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ATL?
On time or early
58%
15–30 min late
19%
30 min–1 hour late
15%
1–2 hours late
4%
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
↑
6pm departures from JFK are often late
↑
Arrivals into ATL at that hour are often late
↑
JFK is prone to delays
↓
Mostly benign weather forecast at ATL
↓
ATL usually runs smoothly
Weather at each end
JFK (origin)
Gusts 30 kt Ceiling none (clear) Visibility 9 mi Precip none
ATL (destination)
Gusts 7 kt Ceiling none (clear) 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.