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 661 LANDED 1:27 PM PT, ~5 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29

WN 661 · SMF → GEG

took off 12:00 PM PT · landed 1:27 PM PT (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 7h after departure

Arrive at GEG more than 15 minutes late?

15% 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

↑ Gusts to 27 kt forecast at GEG that day

↑ This flight has been late 22% of the time recently

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at SMF

Weather at each end

SMF (origin) Gusts23 kt Ceilingnone (clear) Visibility9 mi Precipnone

GEG (destination) Gusts27 kt Ceiling5,000 ft Visibility10+ mi Precip0.03 in

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 661 · SMF → GEG

Odds over time