Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 3123
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 3123 · SLC → SAT
departs 9:50 AM MT · arrives 1:36 PM CT
Forecast issued Wed 8:00 PM ET · 64h before departure
Watch this flight
Other days
Today 13%
Thu 10/1 25%
Fri 10/2 16%
Sat 10/3
Sun 10/4 13%
Mon 10/5 9%
Tue 10/6 8%
Odds over time
Arrive at SAT more than 15 minutes late?
15%
chance · ±1 pts
+6 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SAT more than 15 minutes late?
Calm-weather odds: 8% · changed +6 pts in 24h
+6 pts
15%
Yes 15%
No 85%
Leave SLC more than 15 minutes late?
Calm-weather odds: 11% · changed +1 pt in 24h
+1 pt
13%
Yes 13%
No 87%
Arrive at SAT more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
3%
Yes 3%
No 97%
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
85%
15–30 min late
6%
30 min–1 hour late
5%
1–2 hours late
1%
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 400 ft, 0.3 in of rain forecast at SAT that day
↑
Other factors
↑
SAT is prone to delays
↓
Mostly benign weather forecast at SLC
↓
DL's recent on-time record
Weather at each end
SLC (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
SAT (destination)
Gusts 24 kt Ceiling 400 ft Visibility 4 mi Precip 0.28 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.