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 3902
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3902 · STL → CMH
departs 10:15 AM CT · arrives 12:40 PM ET
Forecast issued Wed 1:00 PM ET · 2h after departure
Watch this flight
Other days
Today
Thu 10/1 9%
Fri 10/2 19%
Sun 10/4 8%
Mon 10/5 8%
Tue 10/6 5%
Odds over time
Arrive at CMH more than 15 minutes late?
8%
chance · ±1 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
8%
Leave 15+ late
9%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at CMH more than 15 minutes late?
Calm-weather odds: 8% · changed +2 pts in 24h
+2 pts
8%
Yes 8%
No 92%
Leave STL more than 15 minutes late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Arrive at CMH more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to CMH?
On time or early
92%
15–30 min late
4%
30 min–1 hour late
2%
1–2 hours late
1%
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
↑
Other factors
↑
This flight has been late 24% of the time recently
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at STL
Weather at each end
STL (origin)
Gusts 14 kt Ceiling 9,000 ft Visibility 10+ mi Precip none
CMH (destination)
Gusts 11 kt Ceiling none (clear) Visibility 8 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.