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 1099
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 1099 · TPA → ATL
departs 1:44 PM ET · arrives 3:23 PM ET
Forecast issued Thu 12:00 AM ET · 62h before departure
Watch this flight
Other days
Today 27%
Fri 10/2 23%
Sat 10/3
Sun 10/4 17%
Mon 10/5 13%
Tue 10/6 14%
Wed 10/7 13%
Odds over time
Arrive at ATL more than 15 minutes late?
27%
chance · ±5 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
26%
Arrive 1h+ late
6%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.7d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
27%
Yes 27%
No 73%
Leave TPA more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
26%
Yes 26%
No 74%
Arrive at ATL more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to ATL?
On time or early
72%
15–30 min late
5%
30 min–1 hour late
15%
1–2 hours late
4%
Over 2 hours late
3%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
0.3 in of rain, thunderstorms forecast at TPA that day
↑
Cloud base down to 300 ft, 0.5 in of rain forecast at ATL that day
↑
Arrivals into ATL at that hour are often late
↓
DL's recent on-time record
↓
ATL usually runs smoothly
Weather at each end
TPA (origin)
Gusts 13 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.29 in
ATL (destination)
Gusts 10 kt Ceiling 300 ft Visibility 4 mi Precip 0.46 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.