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.

SKYWEST · FLIGHT OO 3997 LANDED 9:12 PM PT, ~23 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29

OO 3997 · SEA → PDX

took off 8:34 PM PT · landed 9:12 PM PT (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 2h before departure

Arrive at PDX more than 15 minutes late?

30% chance · ±2 pts +2 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

↑ 8pm departures from SEA are often late

↑ Arrivals into PDX at that hour are often late

↓ Tuesdays in September are usually quieter than average

↓ This flight has been late 11% of the time recently

Weather at each end

SEA (origin) Gusts24 kt Ceiling500 ft Visibility3 mi Precip0.04 in

PDX (destination) Gusts16 kt Ceiling2,700 ft Visibility7 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.

OO 3997 · SEA → PDX

Odds over time