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 1400
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 1400 · STL → ATL
departs 10:16 AM CT · arrives 12:54 PM ET
Forecast issued Thu 3:00 AM ET · 56h before departure
Watch this flight
Other days
Today 21%
Fri 10/2 8%
Sat 10/3
Sun 10/4 7%
Mon 10/5 6%
Tue 10/6 6%
Wed 10/7 6%
Odds over time
Arrive at ATL more than 15 minutes late?
9%
chance · ±3 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
9%
Leave 15+ late
9%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 5% · changed – in 24h
–
9%
Yes 9%
No 91%
Leave STL more than 15 minutes late?
Calm-weather odds: 7% · changed – in 24h
–
9%
Yes 9%
No 91%
Arrive at ATL more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to ATL?
On time or early
90%
15–30 min late
2%
30 min–1 hour late
4%
1–2 hours late
1%
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
↑
0.5 in of rain forecast at ATL that day
↑
Other factors
↑
ATL is busy at that time
↓
DL's recent on-time record
↓
Mostly benign weather forecast at STL
Weather at each end
STL (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
ATL (destination)
Gusts 8 kt Ceiling 3,800 ft Visibility 4 mi Precip 0.40 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.