Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3152
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3152 · DEN → STL
departs 1:00 PM MT · arrives 4:05 PM CT
Forecast issued Wed 2:00 AM ET · 13h before departure
Watch this flight
Other days
Today
Thu 10/1 22%
Fri 10/2 24%
Sat 10/3 20%
Sun 10/4 27%
Mon 10/5 19%
Tue 10/6 21%
Odds over time
Arrive at STL more than 15 minutes late?
39%
chance · ±4 pts
−17 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
42%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
Now
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 16% · changed −17 pts in 24h
−17 pts
39%
Yes 39%
No 61%
Leave DEN more than 15 minutes late?
Calm-weather odds: 22% · changed −16 pts in 24h
−16 pts
42%
Yes 42%
No 58%
Arrive at STL more than an hour late?
Calm-weather odds: 2% · changed −7 pts in 24h
−7 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed −2 pts in 24h
−2 pts
<1%
Yes <1%
No 99%
How late will it get to STL?
On time or early
61%
15–30 min late
13%
30 min–1 hour late
20%
1–2 hours late
3%
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
↑
0.3 in of rain forecast at DEN that day
↑
1pm departures from DEN are often late
↑
WN's recent on-time record
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at STL
Weather at each end
DEN (origin)
Gusts 19 kt Ceiling 4,500 ft Visibility 8 mi Precip 0.34 in
STL (destination)
Gusts 13 kt Ceiling 9,000 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.