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 3632
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3632 · SEA → STL
departs 9:30 AM PT · arrives 3:20 PM CT
Forecast issued Wed 6:00 AM ET · 6h before departure
Watch this flight
Other days
Today
Thu 10/1 19%
Fri 10/2 24%
Mon 10/5 22%
Tue 10/6 24%
Odds over time
Arrive at STL more than 15 minutes late?
23%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
23%
Leave 15+ late
25%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
Now
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 20% · changed +1 pt in 24h
+1 pt
23%
Yes 23%
No 77%
Leave SEA more than 15 minutes late?
Calm-weather odds: 22% · changed +0 pts in 24h
+0 pts
25%
Yes 25%
No 75%
Arrive at STL more than an hour late?
Calm-weather odds: 3% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
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
77%
15–30 min late
14%
30 min–1 hour late
4%
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
↑
This flight has been late 19% of the time recently
↑
WN's recent on-time record
↑
SEA is prone to delays
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SEA
Weather at each end
SEA (origin)
Gusts 9 kt Ceiling 1,800 ft Visibility 7 mi Precip none
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.