Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3541
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 3541 · SAN → SJC
departs 5:30 PM PT · arrives 6:55 PM PT
Forecast issued Sat 1:00 PM ET · 32h before departure
Watch this flight
Other days
Today 64%
Sun 10/4
Mon 10/5 30%
Fri 10/9 33%
Odds over time
Arrive at SJC more than 15 minutes late?
41%
chance · ±3 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
41%
Leave 15+ late
40%
Arrive 1h+ late
11%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 35% · changed +2 pts in 24h
+2 pts
41%
Yes 41%
No 59%
Leave SAN more than 15 minutes late?
Calm-weather odds: 38% · changed +3 pts in 24h
+3 pts
40%
Yes 40%
No 60%
Arrive at SJC more than an hour late?
Calm-weather odds: 7% · changed +1 pt in 24h
+1 pt
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SJC?
On time or early
58%
15–30 min late
18%
30 min–1 hour late
12%
1–2 hours late
9%
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
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 34% of the time recently
↑
WN's recent on-time record
↓
Mostly benign weather forecast at SAN
↓
Mostly benign weather forecast at SJC
Weather at each end
SAN (origin)
Gusts 14 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJC (destination)
Gusts 13 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.