Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1133
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 1133 · DEN → STL
departs 8:35 PM MT · arrives 11:50 PM CT
Forecast issued Fri 9:00 AM ET · 38h before departure
Watch this flight
Other days
Sat 10/3
Thu 10/8 32%
Odds over time
Arrive at STL more than 15 minutes late?
26%
chance · ±8 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
26%
Leave 15+ late
31%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.0d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 23% · changed −1 pt in 24h
−1 pt
26%
Yes 26%
No 74%
Leave DEN more than 15 minutes late?
Calm-weather odds: 26% · changed +0 pts in 24h
+0 pts
31%
Yes 31%
No 69%
Arrive at STL more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to STL?
On time or early
74%
15–30 min late
14%
30 min–1 hour late
8%
1–2 hours late
3%
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
↑
8pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into STL at that hour are often late
↓
Mostly benign weather forecast at STL
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 23 kt Ceiling none (clear) 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.