Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3681
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 3681 · SJC → LAX
departs 8:20 PM PT · arrives 9:45 PM PT
Forecast issued Thu 10:00 PM ET · 1h before departure
Watch this flight
Other days
Thu 10/1
Mon 10/5 23%
Fri 10/9 34%
Odds over time
Arrive at LAX more than 15 minutes late?
32%
chance · ±1 pts
−2 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
32%
Leave 15+ late
38%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at LAX more than 15 minutes late?
Calm-weather odds: 32% · changed −2 pts in 24h
−2 pts
32%
Yes 32%
No 68%
Leave SJC more than 15 minutes late?
Calm-weather odds: 38% · changed +0 pts in 24h
+0 pts
38%
Yes 38%
No 62%
Arrive at LAX 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 LAX?
On time or early
67%
15–30 min late
11%
30 min–1 hour late
12%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into LAX at that hour are often late
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 51% of the time recently
↓
Cloud base down to 700 ft forecast at SJC that day
↓
Cloud base down to 1,000 ft forecast at LAX that day
Weather at each end
SJC (origin)
Gusts 10 kt Ceiling 700 ft Visibility 6 mi Precip none
LAX (destination)
Gusts 13 kt Ceiling 1,000 ft Visibility 6 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.