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 3676
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
WN 3676 · SJC → LAS
departs 8:55 PM PT · arrives 10:25 PM PT
Forecast issued Tue 3:00 PM ET · 9h before departure
Watch this flight
Other days
Today
Wed 9/30 15%
Odds over time
Arrive at LAS more than 15 minutes late?
34%
chance · ±2 pts
+14 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
34%
Leave 15+ late
28%
Arrive 1h+ late
10%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
Now
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 20% · changed +14 pts in 24h
+14 pts
34%
Yes 34%
No 66%
Leave SJC more than 15 minutes late?
Calm-weather odds: 26% · changed +8 pts in 24h
+8 pts
28%
Yes 28%
No 72%
Arrive at LAS more than an hour late?
Calm-weather odds: 8% · changed +4 pts in 24h
+4 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
1%
Yes 1%
No 99%
How late will it get to LAS?
On time or early
65%
15–30 min late
12%
30 min–1 hour late
12%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into LAS at that hour are often late
↑
Mostly benign weather forecast at LAS
↑
LAS is prone to delays
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SJC
Weather at each end
SJC (origin)
Gusts 18 kt Ceiling none (clear) Visibility 8 mi Precip none
LAS (destination)
Gusts 23 kt Ceiling 4,700 ft Visibility 7 mi Precip 0.19 in
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.