Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1121
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Yesterday
DL 1121 · SAT → ATL
departs 12:04 PM CT · arrives 3:39 PM ET
Forecast issued Fri 10:00 PM ET · 9h after departure
Watch this flight
Other days
Fri 10/2
Today 22%
Sun 10/4 19%
Mon 10/5 11%
Fri 10/9 11%
Odds over time
Arrive at ATL more than 15 minutes late?
20%
chance · ±0 pts
+5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
20%
Leave 15+ late
32%
Arrive 1h+ late
5%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.6d
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 20% · changed +5 pts in 24h
+5 pts
20%
Yes 20%
No 80%
Leave SAT more than 15 minutes late?
Calm-weather odds: 32% · changed +4 pts in 24h
+4 pts
32%
Yes 32%
No 68%
Arrive at ATL more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to ATL?
On time or early
78%
15–30 min late
6%
30 min–1 hour late
9%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 200 ft, visibility down to 0.25 mi, 0.3 in of rain forecast at SAT that day
↑
Arrivals into ATL at that hour are often late
↑
ATL is busy at that time
↓
ATL usually runs smoothly
↓
SAT usually runs smoothly
Weather at each end
SAT (origin)
Gusts 18 kt Ceiling 200 ft Visibility 0.25 mi Precip 0.67 in
ATL (destination)
Gusts 8 kt Ceiling 600 ft Visibility 5 mi Precip none
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.