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 3871 DELAYED: NOW PLANNED TO TAKE OFF 1:14 AM PT (2 H 27 MIN LATER THAN FIRST FILED) · SCHEDULED TIME UNKNOWN

Saturday, November 14 Today

WN 3871 · LAS → GEG

departs 12:35 AM PT · arrives 2:24 AM PT

Your aircraft is N9027S (B38M), coming in as WN 4356 from SMF: landed 10:56 PM PT.

Forecast issued Sat 2:00 AM ET · 2h before departure

Arrive at GEG more than 15 minutes late?

57% chance · ±0 pts – · 24h

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

What’s moving the odds

No breakdown for this forecast yet.

Weather at each end

No weather details for this flight yet.

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 3871 · LAS → GEG

Odds over time