Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

SOUTHWEST · FLIGHT WN 3958 LANDED 7:27 AM CT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

Wednesday, September 30 Yesterday

WN 3958 · TPA → STL

took off 6:29 AM ET · landed 7:27 AM CT (scheduled time unknown)

Forecast issued Wed 10:00 PM ET · 15h after departure

Arrive at STL more than 15 minutes late?

6% chance · ±0 pts +0 pts · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

What’s moving the odds

↑ Other factors

↑ TPA is busy at that time

↓ Early flights usually leave on time

↓ Arrivals into STL at that hour are usually not late

Weather at each end

TPA (origin) Gusts17 kt Ceiling6,000 ft Visibility5 mi Precip0.44 in

STL (destination) Gusts20 kt Ceiling9,000 ft Visibility10+ mi Precipnone

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.

WN 3958 · TPA → STL

Odds over time