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 1535
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
DL 1535 · PHX → SLC
departs 6:00 AM MT · arrives 8:37 AM MT
Forecast issued Wed 6:00 AM ET · 27h before departure
Watch this flight
Other days
Today 4%
Thu 10/1
Fri 10/2 4%
Sat 10/3 3%
Sun 10/4 4%
Mon 10/5 4%
Tue 10/6 3%
Odds over time
Arrive at SLC more than 15 minutes late?
3%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
3%
Leave 15+ late
3%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.9d
2d
Now
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Leave PHX more than 15 minutes late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Arrive at SLC more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
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
96%
15–30 min late
1%
30 min–1 hour late
<1%
1–2 hours late
<1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Other factors
↑
PHX is busy at that time
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at PHX
Weather at each end
PHX (origin)
Gusts 5 kt
Ceiling none (clear)
Visibility 10+ mi
Precip none
SLC (destination)
Gusts 11 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.