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 · BHM → DEN
departs 5:15 PM CT · arrives 7:05 PM MT
Forecast issued Fri 10:00 PM ET · 4h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 27%
Fri 10/9 35%
Odds over time
Arrive at DEN more than 15 minutes late?
38%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
38%
Leave 15+ late
32%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.8d
2d
1d
12h
6h
Departs
Lands
Now
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 39% · changed +1 pt in 24h
+1 pt
38%
Yes 38%
No 62%
Leave BHM more than 15 minutes late?
Calm-weather odds: 32% · changed −4 pts in 24h
−4 pts
32%
Yes 32%
No 68%
Arrive at DEN more than an hour late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
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 DEN?
On time or early
61%
15–30 min late
22%
30 min–1 hour late
10%
1–2 hours late
4%
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
↑
Arrivals into DEN at that hour are often late
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Gusts to 28 kt forecast at DEN that day
↓
Mostly benign weather forecast at BHM
Weather at each end
BHM (origin)
Gusts 8 kt Ceiling 3,700 ft Visibility 10+ mi Precip none
DEN (destination)
Gusts 17 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.