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 1423
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
DL 1423 · SMF → SLC
departs 1:36 PM PT · arrives 4:13 PM MT
Forecast issued Fri 2:00 PM ET · 3h before departure
Watch this flight
Other days
Today
Sat 10/3 14%
Sun 10/4 18%
Mon 10/5 12%
Wed 10/7 10%
Odds over time
Arrive at SLC more than 15 minutes late?
26%
chance · ±0 pts
+10 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
26%
Leave 15+ late
18%
Arrive 1h+ late
6%
Cancelled
8%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 14% · changed +10 pts in 24h
+10 pts
26%
Yes 26%
No 74%
Leave SMF more than 15 minutes late?
Calm-weather odds: 13% · changed +3 pts in 24h
+3 pts
18%
Yes 18%
No 82%
Arrive at SLC more than an hour late?
Calm-weather odds: 3% · changed +2 pts in 24h
+2 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +7 pts in 24h
+7 pts
8%
Yes 8%
No 92%
How late will it get to SLC?
On time or early
68%
15–30 min late
17%
30 min–1 hour late
2%
1–2 hours late
5%
Over 2 hours late
1%
Cancelled
8%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Other factors
↑
SMF is prone to delays
↑
1pm departures from SMF are often late
↓
Mostly benign weather forecast at SLC
↓
This flight has been late 12% of the time recently
Weather at each end
SMF (origin)
Gusts 5 kt Ceiling none (clear) Visibility 10+ mi Precip none
SLC (destination)
Gusts 12 kt Ceiling none (clear) 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.