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 4403 SCHEDULED · SCHEDULED TIME UNKNOWN

Monday, October 5 Today

WN 4403 · STL → SAN

departs 8:43 AM CT · arrives 9:58 AM PT

Forecast issued Mon 6:00 AM ET · 4h before departure

Arrive at SAN more than 15 minutes late?

14% chance · ±0 pts +5 pts · 24h

HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.

What’s moving the odds

↑ SAN is prone to delays

↑ This flight has been late 21% of the time recently

↑ SAN is busy at that time

↓ Mostly benign weather forecast at STL

↓ Mostly benign weather forecast at SAN

Weather at each end

STL (origin) Gusts7 kt Ceilingnone (clear) Visibility10+ mi Precipnone

SAN (destination) Gusts18 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 4403 · STL → SAN

Odds over time