Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 1536
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 1536 · STL → ATL
departs 8:00 AM CT · arrives 10:35 AM ET
Forecast issued Wed 2:00 PM ET · 67h before departure
Watch this flight
Other days
Today 11%
Thu 10/1 4%
Fri 10/2 7%
Sat 10/3
Sun 10/4 6%
Mon 10/5 6%
Tue 10/6 5%
Odds over time
Arrive at ATL more than 15 minutes late?
8%
chance · ±1 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
8%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
8%
Yes 8%
No 92%
Leave STL more than 15 minutes late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
8%
Yes 8%
No 92%
Arrive at ATL 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 ATL?
On time or early
92%
15–30 min late
3%
30 min–1 hour late
2%
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
↑
Cloud base down to 300 ft forecast at ATL that day
↑
Other factors
↓
This flight has been late 5% of the time recently
↓
DL's recent on-time record
Weather at each end
STL (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
ATL (destination)
Gusts 7 kt Ceiling 300 ft Visibility 3 mi Precip 0.03 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.