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 4213
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 4213 · DEN → STL
departs 3:55 PM MT · arrives 7:05 PM CT
Forecast issued Wed 12:00 PM ET · 6h before departure
Watch this flight
Other days
Today
Tue 10/6 22%
Odds over time
Arrive at STL more than 15 minutes late?
46%
chance · ±0 pts
−10 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
46%
Leave 15+ late
49%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.8d
2d
1d
12h
Now
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 22% · changed −10 pts in 24h
−10 pts
46%
Yes 46%
No 54%
Leave DEN more than 15 minutes late?
Calm-weather odds: 28% · changed −11 pts in 24h
−11 pts
49%
Yes 49%
No 51%
Arrive at STL more than an hour late?
Calm-weather odds: 3% · changed −8 pts in 24h
−8 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 100%
How late will it get to STL?
On time or early
54%
15–30 min late
24%
30 min–1 hour late
16%
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
↑
3pm departures from DEN are often late
↑
WN's recent on-time record
↑
Later flights pick up delays from earlier in the day
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at STL
Weather at each end
DEN (origin)
Gusts 18 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.06 in
STL (destination)
Gusts 14 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.