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 1646 LANDED 7:21 AM CT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29 Yesterday

WN 1646 · PHL → STL

took off 6:35 AM ET · landed 7:21 AM CT (scheduled time unknown)

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

Arrive at STL more than 15 minutes late?

6% chance · ±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

↑ PHL is busy at that time

↑ PHL is prone to delays

↓ Early flights usually leave on time

↓ Mostly benign weather forecast at STL

Weather at each end

PHL (origin) Gusts17 kt Ceiling1,500 ft Visibility10+ mi Precipnone

STL (destination) Gusts9 kt Ceilingnone (clear) 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 1646 · PHL → STL

Odds over time