Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3918
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 3918 · STL → FLL
departs 7:55 PM CT · arrives 11:40 PM ET
Forecast issued Tue 8:00 PM ET · 49h before departure
Watch this flight
Other days
Today 22%
Wed 9/30 27%
Thu 10/1
Fri 10/2 28%
Sat 10/3 23%
Sun 10/4 25%
Mon 10/5 18%
Odds over time
Arrive at FLL more than 15 minutes late?
42%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
42%
Leave 15+ late
43%
Arrive 1h+ late
21%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
Now
1d
12h
6h
Departs
Lands
Arrive at FLL more than 15 minutes late?
Calm-weather odds: 19% · changed – in 24h
–
42%
Yes 42%
No 58%
Leave STL more than 15 minutes late?
Calm-weather odds: 32% · changed – in 24h
–
43%
Yes 43%
No 57%
Arrive at FLL more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
21%
Yes 21%
No 79%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to FLL?
On time or early
57%
15–30 min late
13%
30 min–1 hour late
8%
1–2 hours late
14%
Over 2 hours late
7%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
0.4 in of rain, thunderstorms forecast at FLL that day
↑
Mostly benign weather forecast at STL
↑
7pm departures from STL are often late
↓
STL usually runs smoothly
↓
Thursdays in October are usually quieter than average
Weather at each end
STL (origin)
Gusts 15 kt Ceiling 4,000 ft Visibility 10+ mi Precip 0.21 in
FLL (destination)
Gusts 24 kt Ceiling 2,600 ft Visibility 5 mi Precip 0.39 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.