Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3968
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
WN 3968 · DCA → STL
departs 12:00 PM ET · arrives 1:15 PM CT
Forecast issued Sun 9:00 AM ET · 3h before departure
Watch this flight
Odds over time
Arrive at STL more than 15 minutes late?
25%
chance · ±0 pts
+9 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
25%
Leave 15+ late
33%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.6d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 22% · changed +9 pts in 24h
+9 pts
25%
Yes 25%
No 75%
Leave DCA more than 15 minutes late?
Calm-weather odds: 22% · changed +7 pts in 24h
+7 pts
33%
Yes 33%
No 67%
Arrive at STL more than an hour late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
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
75%
15–30 min late
13%
30 min–1 hour late
6%
1–2 hours late
5%
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
↑
12pm departures from DCA are often late
↑
DCA is busy at that time
↑
This flight has been late 25% of the time recently
↓
Sundays in October are usually quieter than average
↓
Mostly benign weather forecast at STL
Weather at each end
DCA (origin)
Gusts 10 kt Ceiling 200 ft Visibility 2.5 mi Precip 0.12 in
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.