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 1121
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
DL 1121 · ATL → SAT
departs 9:46 AM ET · arrives 11:09 AM CT
Forecast issued Fri 10:00 AM ET · 48h before departure
Watch this flight
Other days
Today 17%
Sat 10/3 23%
Sun 10/4
Mon 10/5 13%
Tue 10/6 11%
Wed 10/7 10%
Odds over time
Arrive at SAT more than 15 minutes late?
41%
chance · ±7 pts
−3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
41%
Leave 15+ late
27%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.5d
Now
1d
12h
6h
Departs
Lands
Arrive at SAT more than 15 minutes late?
Calm-weather odds: 10% · changed −3 pts in 24h
−3 pts
41%
Yes 41%
No 59%
Leave ATL more than 15 minutes late?
Calm-weather odds: 12% · changed +8 pts in 24h
+8 pts
27%
Yes 27%
No 73%
Arrive at SAT more than an hour late?
Calm-weather odds: 3% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAT?
On time or early
58%
15–30 min late
16%
30 min–1 hour late
16%
1–2 hours late
7%
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
↑
Cloud base down to 300 ft, visibility down to 1 mi, 1.8 in of rain forecast at ATL that day
↑
SAT is prone to delays
↑
Gusts to 25 kt forecast at SAT that day
↓
Sundays in October are usually quieter than average
↓
ATL usually runs smoothly
Weather at each end
ATL (origin)
Gusts 11 kt Ceiling 300 ft Visibility 1 mi Precip 2.09 in
SAT (destination)
Gusts 27 kt Ceiling 1,400 ft Visibility 10+ mi Precip 0.06 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.