Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 437
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 437 · HOU → BHM
departs 2:45 PM CT · arrives 4:30 PM CT
Forecast issued Fri 10:00 PM ET · 6h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 25%
Fri 10/9 26%
Odds over time
Arrive at BHM more than 15 minutes late?
33%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
38%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.7d
2d
1d
12h
6h
Departs
Lands
Arrive at BHM more than 15 minutes late?
Calm-weather odds: 33% · changed +3 pts in 24h
+3 pts
33%
Yes 33%
No 67%
Leave HOU more than 15 minutes late?
Calm-weather odds: 38% · changed +0 pts in 24h
+0 pts
38%
Yes 38%
No 62%
Arrive at BHM more than an hour late?
Calm-weather odds: 6% · changed −1 pt in 24h
−1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BHM?
On time or early
67%
15–30 min late
14%
30 min–1 hour late
12%
1–2 hours late
5%
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
↑
2pm departures from HOU are often late
↑
Visibility down to 1.25 mi, 0.6 in of rain forecast at HOU that day
↑
WN's recent on-time record
↓
Mostly benign weather forecast at BHM
↓
BHM usually runs smoothly
Weather at each end
HOU (origin)
Gusts 17 kt Ceiling 1,800 ft Visibility 1.25 mi Precip 0.41 in
BHM (destination)
Gusts 8 kt Ceiling 3,700 ft 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.