Schedule: the flights that flew on Sunday, Oct 25, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3721
SCHEDULED · TYPICAL SCHEDULE
Sunday, November 1 Tomorrow
WN 3721 · SAT → LAS
departs 8:59 PM CT · arrives 9:46 PM PT
Forecast issued Sat 12:00 AM ET · 47h before departure
Watch this flight
Other days
Sun 11/1
Mon 11/2 33%
Tue 11/3 34%
Wed 11/4 30%
Thu 11/5 40%
Fri 11/6 48%
Odds over time
Arrive at LAS more than 15 minutes late?
48%
chance · ±11 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
48%
Leave 15+ late
47%
Arrive 1h+ late
14%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.9d
Now
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 30% · changed +0 pts in 24h
+0 pts
48%
Yes 48%
No 52%
Leave SAT more than 15 minutes late?
Calm-weather odds: 38% · changed −5 pts in 24h
−5 pts
47%
Yes 47%
No 53%
Arrive at LAS more than an hour late?
Calm-weather odds: 6% · changed −2 pts in 24h
−2 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
52%
15–30 min late
22%
30 min–1 hour late
12%
1–2 hours late
9%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
WN's recent on-time record
↑
Arrivals into LAS at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Sundays in November are usually quieter than average
↓
Mostly benign weather forecast at SAT
Weather at each end
SAT (origin)
Gusts 7 kt Ceiling 2,700 ft Visibility 9 mi Precip none
LAS (destination)
Gusts 26 kt Ceiling 2,700 ft Visibility 3 mi Precip 0.18 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.