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 3971 SCHEDULED · SCHEDULED TIME UNKNOWN

Sunday, October 4 Today

WN 3971 · PDX → SMF

departs 11:27 AM PT · arrives 12:39 PM PT

Forecast issued Sun 11:00 AM ET · 4h before departure

Arrive at SMF more than 15 minutes late?

30% chance · ±0 pts +18 pts · 24h

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

What’s moving the odds

↑ Other factors

↑ 11am departures from PDX are often late

↑ SMF is prone to delays

↓ Mostly benign weather forecast at PDX

↓ Mostly benign weather forecast at SMF

Weather at each end

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

SMF (destination) Gusts7 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 3971 · PDX → SMF

Odds over time