Schedule: the flights that flew on Thursday, Oct 22, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3891
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 29
WN 3891 · SLC → SJC
departs 10:51 AM MT · arrives 11:57 AM PT
Forecast issued Tue 3:00 AM ET · 58h before departure
Watch this flight
Other days
Thu 10/29
Fri 10/30 8%
Mon 11/2 24%
Odds over time
Arrive at SJC more than 15 minutes late?
7%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
7%
Leave 15+ late
10%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
6.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 8% · changed – in 24h
–
7%
Yes 7%
No 93%
Leave SLC more than 15 minutes late?
Calm-weather odds: 10% · changed – in 24h
–
10%
Yes 10%
No 90%
Arrive at SJC more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SJC?
On time or early
93%
15–30 min late
2%
30 min–1 hour late
3%
1–2 hours late
1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 22% of the time recently
↑
SLC is busy at that time
↓
Mostly benign weather forecast at SJC
↓
Mostly benign weather forecast at SLC
Weather at each end
SLC (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJC (destination)
Gusts 8 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.