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 2023
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 2023 · PHL → SLC
departs 7:30 AM ET · arrives 10:10 AM MT
Forecast issued Thu 6:00 PM ET · 38h before departure
Watch this flight
Other days
Today 14%
Fri 10/2 13%
Sat 10/3
Sun 10/4 12%
Mon 10/5 10%
Tue 10/6 9%
Wed 10/7 10%
Odds over time
Arrive at SLC more than 15 minutes late?
8%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
7%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.4d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Leave PHL more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Arrive at SLC more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
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 SLC?
On time or early
92%
15–30 min late
3%
30 min–1 hour late
2%
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
↓
Mostly benign weather forecast at SLC
↓
Early flights usually leave on time
Weather at each end
PHL (origin)
Gusts 13 kt Ceiling 7,000 ft Visibility 10+ mi Precip 0.03 in
SLC (destination)
Gusts 10 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.