Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 2874
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
DL 2874 · SLC → SEA
departs 7:50 AM MT · arrives 9:02 AM PT
Forecast issued Fri 6:00 PM ET · 64h before departure
Watch this flight
Other days
Today 12%
Sat 10/3 10%
Sun 10/4 12%
Mon 10/5
Tue 10/6 11%
Wed 10/7 8%
Thu 10/8 11%
Odds over time
Arrive at SEA more than 15 minutes late?
13%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
13%
Leave 15+ late
8%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.4d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 9% · changed – in 24h
–
13%
Yes 13%
No 87%
Leave SLC more than 15 minutes late?
Calm-weather odds: 6% · changed – in 24h
–
8%
Yes 8%
No 92%
Arrive at SEA more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
86%
15–30 min late
6%
30 min–1 hour late
5%
1–2 hours late
1%
Over 2 hours late
2%
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
↑
SLC is busy at that time
↓
Mostly benign weather forecast at SLC
↓
Early flights usually leave on time
Weather at each end
SLC (origin)
Gusts 17 kt Ceiling none (clear) Visibility 10+ mi Precip none
SEA (destination)
Gusts 5 kt Ceiling 200 ft 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.