Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 3136
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
DL 3136 · ATL → GSP
departs 9:14 PM ET · arrives 10:15 PM ET
Forecast issued Fri 11:00 AM ET · 58h before departure
Watch this flight
Other days
Today 38%
Sun 10/4
Mon 10/5 19%
Tue 10/6 14%
Odds over time
Arrive at GSP more than 15 minutes late?
35%
chance · ±6 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
35%
Leave 15+ late
30%
Arrive 1h+ late
9%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.0d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at GSP more than 15 minutes late?
Calm-weather odds: 19% · changed – in 24h
–
35%
Yes 35%
No 65%
Leave ATL more than 15 minutes late?
Calm-weather odds: 20% · changed – in 24h
–
30%
Yes 30%
No 70%
Arrive at GSP more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
2%
Yes 2%
No 98%
How late will it get to GSP?
On time or early
64%
15–30 min late
8%
30 min–1 hour late
17%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 300 ft, visibility down to 1 mi, 2.1 in of rain forecast at ATL that day
↑
Cloud base down to 200 ft, visibility down to 1 mi, 1.7 in of rain forecast at GSP that day
↑
9pm departures from ATL are often late
↓
ATL usually runs smoothly
↓
GSP usually runs smoothly
Weather at each end
ATL (origin)
Gusts 11 kt Ceiling 300 ft Visibility 1 mi Precip 2.09 in
GSP (destination)
Gusts 14 kt Ceiling 200 ft Visibility 1 mi Precip 1.74 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.