Schedule: a typical summer Monday (the flights of Jul 27, 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
Monday, October 5
DL 1121 · ATL → SAT
departs 9:46 AM ET · arrives 11:09 AM CT
Forecast issued Fri 8:00 PM ET · 62h before departure
Watch this flight
Other days
Today 27%
Sat 10/3 30%
Sun 10/4 39%
Mon 10/5
Odds over time
Arrive at SAT more than 15 minutes late?
28%
chance · ±8 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
23%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.4d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SAT more than 15 minutes late?
Calm-weather odds: 7% · changed – in 24h
–
28%
Yes 28%
No 72%
Leave ATL more than 15 minutes late?
Calm-weather odds: 9% · changed – in 24h
–
23%
Yes 23%
No 77%
Arrive at SAT 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 SAT?
On time or early
71%
15–30 min late
10%
30 min–1 hour late
12%
1–2 hours late
4%
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 2 mi, 1.0 in of rain forecast at ATL that day
↑
SAT is prone to delays
↑
Other factors
↓
Mondays in October are usually quieter than average
↓
ATL usually runs smoothly
Weather at each end
ATL (origin)
Gusts 14 kt Ceiling 300 ft Visibility 2 mi Precip 0.97 in
SAT (destination)
Gusts 25 kt Ceiling 4,300 ft Visibility 10+ 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.