Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 2870
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
DL 2870 · SFO → SEA
departs 10:35 AM PT · arrives 12:48 PM PT
Forecast issued Fri 5:00 PM ET · 3h after departure
Watch this flight
Other days
Today
Sat 10/3 15%
Sun 10/4 23%
Mon 10/5 28%
Odds over time
Arrive at SEA more than 15 minutes late?
34%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
34%
Leave 15+ late
28%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.6d
2d
1d
12h
6h
Departs
Lands
Now
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 35% · changed +4 pts in 24h
+4 pts
34%
Yes 34%
No 66%
Leave SFO more than 15 minutes late?
Calm-weather odds: 30% · changed +1 pt in 24h
+1 pt
28%
Yes 28%
No 72%
Arrive at SEA more than an hour late?
Calm-weather odds: 9% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
66%
15–30 min late
11%
30 min–1 hour late
14%
1–2 hours late
4%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
10am departures from SFO are often late
↑
SFO is prone to delays
↑
This flight has been late 45% of the time recently
↓
DL's recent on-time record
↓
Mostly benign weather forecast at SEA
Weather at each end
SFO (origin)
Gusts 9 kt Ceiling 300 ft Visibility 3 mi Precip none
SEA (destination)
Gusts 10 kt Ceiling 1,500 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.