Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4130
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
WN 4130 · SEA → SJC
departs 3:25 PM PT · arrives 5:35 PM PT
Forecast issued Tue 5:00 PM ET · 25h before departure
Watch this flight
Other days
Today 30%
Wed 9/30
Odds over time
Arrive at SJC more than 15 minutes late?
27%
chance · ±3 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
30%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
Now
12h
6h
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 20% · changed +2 pts in 24h
+2 pts
27%
Yes 27%
No 73%
Leave SEA more than 15 minutes late?
Calm-weather odds: 26% · changed +6 pts in 24h
+6 pts
30%
Yes 30%
No 70%
Arrive at SJC more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
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
72%
15–30 min late
17%
30 min–1 hour late
5%
1–2 hours late
4%
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 33% of the time recently
↑
WN's recent on-time record
↑
3pm departures from SEA are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SJC
Weather at each end
SEA (origin)
Gusts 9 kt Ceiling 1,800 ft Visibility 6 mi Precip 0.01 in
SJC (destination)
Gusts 13 kt Ceiling 1,500 ft Visibility 7 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.