Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3992
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
WN 3992 · STS → LAS
departs 3:55 PM PT · arrives 5:40 PM PT
Forecast issued Sat 1:00 AM ET · 66h before departure
Watch this flight
Other days
Today 16%
Mon 10/5
Fri 10/9 28%
Odds over time
Arrive at LAS more than 15 minutes late?
16%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
24%
Arrive 1h+ late
8%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 13% · changed – in 24h
–
16%
Yes 16%
No 84%
Leave STS more than 15 minutes late?
Calm-weather odds: 22% · changed – in 24h
–
24%
Yes 24%
No 76%
Arrive at LAS more than an hour late?
Calm-weather odds: 6% · changed – in 24h
–
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
84%
15–30 min late
3%
30 min–1 hour late
5%
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
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into LAS at that hour are often late
↑
LAS is prone to delays
↓
Mostly benign weather forecast at LAS
↓
Mondays in October are usually quieter than average
Weather at each end
STS (origin)
Gusts 10 kt Ceiling 100 ft Visibility 0.2 mi Precip none
LAS (destination)
Gusts 9 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.