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 3757
SCHEDULED · TYPICAL SCHEDULE
Sunday, November 1 Today
WN 3757 · SEA → LAS
departs 8:21 PM PT · arrives 10:47 PM PT
Forecast issued Sun 5:00 AM ET · 18h before departure
Watch this flight
Other days
Today
Mon 11/2 33%
Thu 11/5 52%
Fri 11/6 59%
Odds over time
Arrive at LAS more than 15 minutes late?
58%
chance · ±9 pts
+6 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
58%
Leave 15+ late
58%
Arrive 1h+ late
25%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
7.0d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 46% · changed +6 pts in 24h
+6 pts
58%
Yes 58%
No 42%
Leave SEA more than 15 minutes late?
Calm-weather odds: 56% · changed +3 pts in 24h
+3 pts
58%
Yes 58%
No 42%
Arrive at LAS more than an hour late?
Calm-weather odds: 17% · changed +9 pts in 24h
+9 pts
25%
Yes 25%
No 75%
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
42%
15–30 min late
19%
30 min–1 hour late
13%
1–2 hours late
19%
Over 2 hours late
5%
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
↓
Cloud base down to 200 ft, visibility down to 0.3 mi forecast at SEA that day
Weather at each end
SEA (origin)
Gusts 5 kt Ceiling 200 ft Visibility 0.3 mi Precip none
LAS (destination)
Gusts 31 kt Ceiling 3,500 ft Visibility 5 mi Precip 0.24 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.