Schedule: a typical summer Saturday (the flights of Jul 25, 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
Saturday, October 3 Today
DL 2870 · SEA → SFO
departs 7:20 AM PT · arrives 9:38 AM PT
Forecast issued Sat 7:00 AM ET · 3h before departure
Watch this flight
Other days
Today
Sun 10/4 20%
Mon 10/5 21%
Fri 10/9 28%
Odds over time
Arrive at SFO more than 15 minutes late?
21%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
21%
Leave 15+ late
21%
Arrive 1h+ late
7%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.5d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 19% · changed +3 pts in 24h
+3 pts
21%
Yes 21%
No 79%
Leave SEA more than 15 minutes late?
Calm-weather odds: 13% · changed +9 pts in 24h
+9 pts
21%
Yes 21%
No 79%
Arrive at SFO more than an hour late?
Calm-weather odds: 6% · changed +4 pts in 24h
+4 pts
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SFO?
On time or early
78%
15–30 min late
9%
30 min–1 hour late
5%
1–2 hours late
3%
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
↑
Arrivals into SFO at that hour are often late
↑
This flight has been late 50% of the time recently
↑
SFO is prone to delays
↓
Mostly benign weather forecast at SFO
↓
Early flights usually leave on time
Weather at each end
SEA (origin)
Gusts 11 kt Ceiling 600 ft Visibility 8 mi Precip none
SFO (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.