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 3155
SCHEDULED · TYPICAL SCHEDULE
Monday, November 9
WN 3155 · STL → HOU
departs 6:45 PM CT · arrives 8:50 PM CT
Forecast issued Sat 12:00 PM ET · 56h before departure
Watch this flight
Other days
Today 23%
Sun 11/8 36%
Mon 11/9
Tue 11/10 15%
Wed 11/11 16%
Thu 11/12 37%
Fri 11/13 34%
Odds over time
Arrive at HOU more than 15 minutes late?
27%
chance · ±2 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
34%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.8d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at HOU more than 15 minutes late?
Calm-weather odds: 20% · changed – in 24h
–
27%
Yes 27%
No 73%
Leave STL more than 15 minutes late?
Calm-weather odds: 31% · changed – in 24h
–
34%
Yes 34%
No 66%
Arrive at HOU 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 HOU?
On time or early
73%
15–30 min late
14%
30 min–1 hour late
7%
1–2 hours late
4%
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 HOU at that hour are often late
↓
Mostly benign weather forecast at STL
↓
Mondays in November are usually quieter than average
Weather at each end
STL (origin)
Gusts 7 kt Ceiling none (clear) Visibility 10+ mi Precip none
HOU (destination)
Gusts 9 kt Ceiling 800 ft Visibility 10+ mi Precip 0.01 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.