Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3631
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 3631 · VPS → HOU
departs 8:10 PM CT · arrives 9:55 PM CT
Forecast issued Sat 7:00 AM ET · 38h before departure
Watch this flight
Odds over time
Arrive at HOU more than 15 minutes late?
37%
chance · ±6 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
37%
Leave 15+ late
38%
Arrive 1h+ late
12%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.0d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at HOU more than 15 minutes late?
Calm-weather odds: 17% · changed +2 pts in 24h
+2 pts
37%
Yes 37%
No 63%
Leave VPS more than 15 minutes late?
Calm-weather odds: 22% · changed +3 pts in 24h
+3 pts
38%
Yes 38%
No 62%
Arrive at HOU more than an hour late?
Calm-weather odds: 3% · changed −2 pts in 24h
−2 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to HOU?
On time or early
62%
15–30 min late
14%
30 min–1 hour late
11%
1–2 hours late
4%
Over 2 hours late
8%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 600 ft, 3.9 in of rain forecast at VPS that day
↑
Cloud base down to 600 ft forecast at HOU that day
↑
Arrivals into HOU at that hour are often late
↓
VPS usually runs smoothly
↓
Sundays in October are usually quieter than average
Weather at each end
VPS (origin)
Gusts 14 kt Ceiling 500 ft Visibility 3 mi Precip 3.90 in
HOU (destination)
Gusts 21 kt Ceiling 600 ft Visibility 4 mi Precip 0.12 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.