Schedule: a typical summer Saturday (the flights of Jul 25, 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
Saturday, October 3 Tomorrow
DL 1121 · ATL → SAT
departs 9:59 AM ET · arrives 11:26 AM CT
Forecast issued Fri 3:00 PM ET · 19h before departure
Watch this flight
Other days
Today 27%
Sat 10/3
Sun 10/4 39%
Mon 10/5 13%
Odds over time
Arrive at SAT more than 15 minutes late?
28%
chance · ±2 pts
−5 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
13%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.5d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at SAT more than 15 minutes late?
Calm-weather odds: 12% · changed −5 pts in 24h
−5 pts
28%
Yes 28%
No 72%
Leave ATL more than 15 minutes late?
Calm-weather odds: 11% · changed −2 pts in 24h
−2 pts
13%
Yes 13%
No 87%
Arrive at SAT more than an hour late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
4%
Yes 4%
No 96%
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
72%
15–30 min late
17%
30 min–1 hour late
7%
1–2 hours late
3%
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 800 ft forecast at SAT that day
↑
SAT is prone to delays
↑
Other factors
↓
DL's recent on-time record
↓
Arrivals into SAT at that hour are usually not late
Weather at each end
ATL (origin)
Gusts 9 kt Ceiling 500 ft Visibility 5 mi Precip 0.12 in
SAT (destination)
Gusts 21 kt Ceiling 900 ft Visibility 7 mi Precip 0.20 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.