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 4578 LANDED 12:57 AM PT, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, October 27 Today

WN 4578 · AUS → LAS

took off 12:26 AM CT · landed 12:57 AM PT (scheduled time unknown)

Forecast issued Tue 6:00 AM ET · 5h after departure

Arrive at LAS more than 15 minutes late?

9% chance · ±1 pts – · 24h

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

What’s moving the odds

No breakdown for this forecast yet.

Weather at each end

AUS (origin) Gusts14 kt Ceiling6,500 ft Visibility10+ mi Precipnone

LAS (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 4578 · AUS → LAS

Odds over time