Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3152
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
WN 3152 · DEN → STL
departs 1:00 PM MT · arrives 4:05 PM CT
Forecast issued Tue 4:00 PM ET · 1h after departure
Watch this flight
Other days
Today
Wed 9/30 51%
Thu 10/1 23%
Fri 10/2 20%
Sat 10/3 20%
Sun 10/4 27%
Mon 10/5 19%
Odds over time
Arrive at STL more than 15 minutes late?
20%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
20%
Leave 15+ late
26%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 20% · changed +0 pts in 24h
+0 pts
20%
Yes 20%
No 80%
Leave DEN more than 15 minutes late?
Calm-weather odds: 26% · changed +1 pt in 24h
+1 pt
26%
Yes 26%
No 74%
Arrive at STL more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to STL?
On time or early
79%
15–30 min late
11%
30 min–1 hour late
6%
1–2 hours late
2%
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
↑
1pm departures from DEN are often late
↑
DEN is busy at that time
↑
WN's recent on-time record
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 9 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
STL (destination)
Gusts 10 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.