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 Tomorrow
DL 2870 · SFO → SEA
departs 10:35 AM PT · arrives 12:48 PM PT
Forecast issued Fri 4:00 PM ET · 22h before departure
Watch this flight
Other days
Today 36%
Sat 10/3
Sun 10/4 22%
Mon 10/5 28%
Odds over time
Arrive at SEA more than 15 minutes late?
14%
chance · ±0 pts
−5 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
14%
Leave 15+ late
18%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.6d
2d
Now
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 15% · changed −5 pts in 24h
−5 pts
14%
Yes 14%
No 86%
Leave SFO more than 15 minutes late?
Calm-weather odds: 18% · changed +0 pts in 24h
+0 pts
18%
Yes 18%
No 82%
Arrive at SEA more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
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 SEA?
On time or early
85%
15–30 min late
4%
30 min–1 hour late
6%
1–2 hours late
2%
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
↑
10am departures from SFO are often late
↑
This flight has been late 45% of the time recently
↑
SFO is prone to delays
↓
DL's recent on-time record
↓
Mostly benign weather forecast at SFO
Weather at each end
SFO (origin)
Gusts 12 kt Ceiling none (clear) Visibility 9 mi Precip none
SEA (destination)
Gusts 11 kt Ceiling none (clear) Visibility 9 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.