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 3573
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 3573 · STL → ECP
departs 7:05 PM CT · arrives 8:55 PM CT
Forecast issued Fri 11:00 AM ET · 33h before departure
Watch this flight
Odds over time
Arrive at ECP more than 15 minutes late?
28%
chance · ±4 pts
+4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
26%
Arrive 1h+ late
10%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ECP more than 15 minutes late?
Calm-weather odds: 20% · changed +4 pts in 24h
+4 pts
28%
Yes 28%
No 72%
Leave STL more than 15 minutes late?
Calm-weather odds: 24% · changed +1 pt in 24h
+1 pt
26%
Yes 26%
No 74%
Arrive at ECP more than an hour late?
Calm-weather odds: 5% · changed +2 pts in 24h
+2 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to ECP?
On time or early
71%
15–30 min late
13%
30 min–1 hour late
5%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
1.0 in of rain, thunderstorms forecast at ECP that day
↑
Later flights pick up delays from earlier in the day
↑
7pm departures from STL are often late
↓
Mostly benign weather forecast at STL
↓
Saturdays in October are usually quieter than average
Weather at each end
STL (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
ECP (destination)
Gusts 13 kt Ceiling 1,967 ft Visibility 6.66667 mi Precip 1.04 in
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.