Schedule: the flights that flew on Sunday, Nov 1, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1437
SCHEDULED · TYPICAL SCHEDULE
Sunday, November 8 Tomorrow
WN 1437 · HOU → LAS
departs 7:39 PM CT · arrives 9:08 PM PT
Forecast issued Sat 4:00 AM ET · 41h before departure
Watch this flight
Other days
Today 39%
Sun 11/8
Mon 11/9 23%
Tue 11/10 24%
Wed 11/11 29%
Odds over time
Arrive at LAS more than 15 minutes late?
25%
chance · ±4 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
25%
Leave 15+ late
43%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 26% · changed −2 pts in 24h
−2 pts
25%
Yes 25%
No 75%
Leave HOU more than 15 minutes late?
Calm-weather odds: 43% · changed +0 pts in 24h
+0 pts
43%
Yes 43%
No 57%
Arrive at LAS more than an hour late?
Calm-weather odds: 5% · changed −2 pts in 24h
−2 pts
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 LAS?
On time or early
74%
15–30 min late
8%
30 min–1 hour late
12%
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
↑
WN's recent on-time record
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into LAS at that hour are often late
↓
Mostly benign weather forecast at LAS
↓
Mostly benign weather forecast at HOU
Weather at each end
HOU (origin)
Gusts 13 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
LAS (destination)
Gusts 8 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.