Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 1659
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
DL 1659 · LAS → SLC
departs 1:15 PM PT · arrives 3:44 PM MT
Forecast issued Tue 5:00 PM ET · 47h before departure
Watch this flight
Other days
Today 46%
Wed 9/30 15%
Thu 10/1
Fri 10/2 17%
Sat 10/3 10%
Sun 10/4 18%
Mon 10/5 16%
Odds over time
Arrive at SLC more than 15 minutes late?
14%
chance · ±1 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
14%
Leave 15+ late
13%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 13% · changed +1 pt in 24h
+1 pt
14%
Yes 14%
No 86%
Leave LAS more than 15 minutes late?
Calm-weather odds: 12% · changed +1 pt in 24h
+1 pt
13%
Yes 13%
No 87%
Arrive at SLC more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
85%
15–30 min late
3%
30 min–1 hour late
5%
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
↑
1pm departures from LAS are often late
↑
LAS is prone to delays
↑
LAS is busy at that time
↓
Mostly benign weather forecast at LAS
↓
Mostly benign weather forecast at SLC
Weather at each end
LAS (origin)
Gusts 10 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.