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.

ALASKA · FLIGHT AS 371 LANDED 5:25 AM ET, ~11 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29 Yesterday

AS 371 · SEA → PHL

took off 9:59 PM PT · landed 5:25 AM ET (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 3h before departure

Arrive at PHL more than 15 minutes late?

28% chance · ±0 pts +3 pts · 24h

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

What’s moving the odds

↑ 9pm departures from SEA are often late

↑ Cloud base down to 500 ft forecast at SEA that day

↑ SEA is busy at that time

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at PHL

Weather at each end

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

PHL (destination) Gusts17 kt Ceiling1,500 ft 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.

AS 371 · SEA → PHL

Odds over time