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 3538
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 3538 · SJC → SLC
departs 3:35 PM PT · arrives 6:25 PM MT
Forecast issued Fri 6:00 PM ET · 1h before departure
Watch this flight
Other days
Today
Mon 10/5 19%
Odds over time
Arrive at SLC more than 15 minutes late?
24%
chance · ±2 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
24%
Leave 15+ late
35%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 25% · changed +0 pts in 24h
+0 pts
24%
Yes 24%
No 76%
Leave SJC more than 15 minutes late?
Calm-weather odds: 34% · changed +0 pts in 24h
+0 pts
35%
Yes 35%
No 65%
Arrive at SLC more than an hour late?
Calm-weather odds: 7% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
75%
15–30 min late
10%
30 min–1 hour late
6%
1–2 hours late
6%
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
↑
This flight has been late 36% of the time recently
↑
Later flights pick up delays from earlier in the day
↑
SJC is prone to delays
↓
Mostly benign weather forecast at SLC
↓
Cloud base down to 700 ft forecast at SJC that day
Weather at each end
SJC (origin)
Gusts 5 kt Ceiling 700 ft Visibility 4 mi Precip none
SLC (destination)
Gusts 12 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.