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 1099
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
DL 1099 · ATL → TPA
departs 11:10 AM ET · arrives 12:39 PM ET
Forecast issued Fri 5:00 PM ET · 42h before departure
Watch this flight
Other days
Today 12%
Sat 10/3 19%
Sun 10/4
Mon 10/5 10%
Tue 10/6 8%
Wed 10/7 9%
Thu 10/8 12%
Odds over time
Arrive at TPA more than 15 minutes late?
27%
chance · ±5 pts
−2 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
8%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.5d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at TPA more than 15 minutes late?
Calm-weather odds: 11% · changed −2 pts in 24h
−2 pts
27%
Yes 27%
No 73%
Leave ATL more than 15 minutes late?
Calm-weather odds: 13% · changed +2 pts in 24h
+2 pts
26%
Yes 26%
No 74%
Arrive at TPA more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to TPA?
On time or early
72%
15–30 min late
8%
30 min–1 hour late
11%
1–2 hours late
5%
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
↑
Cloud base down to 300 ft, visibility down to 1 mi, 2.0 in of rain forecast at ATL that day
↑
Other factors
↑
This flight has been late 16% of the time recently
↓
ATL usually runs smoothly
↓
Sundays in October are usually quieter than average
Weather at each end
ATL (origin)
Gusts 11 kt Ceiling 300 ft Visibility 1 mi Precip 1.96 in
TPA (destination)
Gusts 12 kt Ceiling 5,000 ft Visibility 10+ mi Precip 0.09 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.