Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4130
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
WN 4130 · SEA → SJC
departs 3:25 PM PT · arrives 5:35 PM PT
Forecast issued Tue 3:00 PM ET · 3h before departure
Watch this flight
Other days
Today
Wed 9/30 25%
Odds over time
Arrive at SJC more than 15 minutes late?
33%
chance · ±0 pts
−5 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
33%
Leave 15+ late
31%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 32% · changed −5 pts in 24h
−5 pts
33%
Yes 33%
No 67%
Leave SEA more than 15 minutes late?
Calm-weather odds: 31% · changed −6 pts in 24h
−6 pts
31%
Yes 31%
No 69%
Arrive at SJC more than an hour late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
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
67%
15–30 min late
21%
30 min–1 hour late
6%
1–2 hours late
3%
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 33% of the time recently
↑
3pm departures from SEA are often late
↑
WN's recent on-time record
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SJC
Weather at each end
SEA (origin)
Gusts 24 kt Ceiling 1,000 ft Visibility 6 mi Precip 0.03 in
SJC (destination)
Gusts 18 kt Ceiling none (clear) Visibility 8 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.