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 1503
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
DL 1503 · SLC → GEG
departs 3:25 PM MT · arrives 4:08 PM PT
Forecast issued Wed 2:00 PM ET · 27h before departure
Watch this flight
Other days
Today 17%
Thu 10/1
Fri 10/2 14%
Sat 10/3 11%
Sun 10/4 15%
Mon 10/5 14%
Tue 10/6 12%
Odds over time
Arrive at GEG more than 15 minutes late?
14%
chance · ±1 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
14%
Leave 15+ late
12%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at GEG more than 15 minutes late?
Calm-weather odds: 14% · changed +2 pts in 24h
+2 pts
14%
Yes 14%
No 86%
Leave SLC more than 15 minutes late?
Calm-weather odds: 11% · changed +0 pts in 24h
+0 pts
12%
Yes 12%
No 88%
Arrive at GEG more than an hour late?
Calm-weather odds: 3% · 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 GEG?
On time or early
86%
15–30 min late
5%
30 min–1 hour late
5%
1–2 hours late
2%
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
↑
SLC is busy at that time
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 20% of the time recently
↓
Mostly benign weather forecast at SLC
↓
Mostly benign weather forecast at GEG
Weather at each end
SLC (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
GEG (destination)
Gusts 5 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.