Schedule: the flights that flew on Monday, Nov 2, 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
Monday, November 9
WN 1437 · HOU → LAS
departs 7:40 PM CT · arrives 8:52 PM PT
Forecast issued Sat 5:00 AM ET · 64h before departure
Watch this flight
Other days
Today 39%
Sun 11/8 25%
Mon 11/9
Tue 11/10 24%
Wed 11/11 29%
Odds over time
Arrive at LAS more than 15 minutes late?
24%
chance · ±4 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
24%
Leave 15+ late
34%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 25% · changed – in 24h
–
24%
Yes 24%
No 76%
Leave HOU more than 15 minutes late?
Calm-weather odds: 33% · changed – in 24h
–
34%
Yes 34%
No 66%
Arrive at LAS more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
76%
15–30 min late
10%
30 min–1 hour late
9%
1–2 hours late
3%
Over 2 hours late
1%
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 9 kt Ceiling 1,800 ft Visibility 9 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.