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.
SOUTHWEST · FLIGHT WN 3807
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 3807 · SMF → ONT
departs 2:00 PM PT · arrives 3:20 PM PT
Forecast issued Fri 1:00 PM ET · 4h before departure
Watch this flight
Other days
Today
Mon 10/5 18%
Wed 10/7 15%
Odds over time
Arrive at ONT more than 15 minutes late?
26%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
26%
Leave 15+ late
26%
Arrive 1h+ late
4%
Cancelled
4%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 20% · changed +4 pts in 24h
+4 pts
26%
Yes 26%
No 74%
Leave SMF more than 15 minutes late?
Calm-weather odds: 32% · changed −6 pts in 24h
−6 pts
26%
Yes 26%
No 74%
Arrive at ONT 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 +4 pts in 24h
+4 pts
4%
Yes 4%
No 96%
How late will it get to ONT?
On time or early
71%
15–30 min late
15%
30 min–1 hour late
7%
1–2 hours late
2%
Over 2 hours late
2%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
WN's recent on-time record
↑
2pm departures from SMF are often late
↑
Other factors
↓
Mostly benign weather forecast at ONT
↓
Mostly benign weather forecast at SMF
Weather at each end
SMF (origin)
Gusts 5 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 16 kt Ceiling none (clear) Visibility 8 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.