Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 2858
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
DL 2858 · SEA → SLC
departs 7:15 AM PT · arrives 10:26 AM MT
Forecast issued Fri 12:00 PM ET · 46h before departure
Watch this flight
Other days
Today 11%
Sat 10/3 11%
Sun 10/4
Mon 10/5 11%
Tue 10/6 10%
Wed 10/7 9%
Thu 10/8 11%
Odds over time
Arrive at SLC more than 15 minutes late?
15%
chance · ±2 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
8%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
5.5d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 11% · changed +0 pts in 24h
+0 pts
15%
Yes 15%
No 85%
Leave SEA more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Arrive at SLC more than an hour late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
4%
Yes 4%
No 96%
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
7%
30 min–1 hour late
3%
1–2 hours late
3%
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
↑
SEA is prone to delays
↑
SEA is busy at that time
↑
Other factors
↓
Early flights usually leave on time
↓
This flight has been late 8% of the time recently
Weather at each end
SEA (origin)
Gusts 7 kt Ceiling 100 ft Visibility 8 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.