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 1120
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
DL 1120 · SEA → SLC
departs 1:30 PM PT · arrives 4:40 PM MT
Forecast issued Wed 2:00 AM ET · 38h before departure
Watch this flight
Other days
Today 20%
Thu 10/1
Fri 10/2 20%
Sat 10/3 17%
Sun 10/4 25%
Mon 10/5 19%
Tue 10/6 15%
Odds over time
Arrive at SLC more than 15 minutes late?
20%
chance · ±2 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
20%
Leave 15+ late
16%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 16% · changed +1 pt in 24h
+1 pt
20%
Yes 20%
No 80%
Leave SEA more than 15 minutes late?
Calm-weather odds: 15% · changed +0 pts in 24h
+0 pts
16%
Yes 16%
No 84%
Arrive at SLC 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 SLC?
On time or early
79%
15–30 min late
11%
30 min–1 hour late
6%
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
↑
1pm departures from SEA are often late
↑
SEA is prone to delays
↑
SEA is busy at that time
↓
This flight has been late 17% of the time recently
↓
Mostly benign weather forecast at SEA
Weather at each end
SEA (origin)
Gusts 6 kt Ceiling 3,500 ft Visibility 8 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.