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 521 LANDED 6:21 PM PT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

Friday, October 2 Yesterday

AS 521 · SEA → SJC

took off 4:41 PM PT · landed 6:21 PM PT (scheduled time unknown)

Forecast issued Fri 10:00 PM ET · 2h after departure

Arrive at SJC more than 15 minutes late?

36% chance · ±1 pts – · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

What’s moving the odds

No breakdown for this forecast yet.

Weather at each end

SEA (origin) Gusts10 kt Ceiling1,500 ft Visibility10+ mi Precipnone

SJC (destination) Gusts5 kt Ceiling700 ft Visibility4 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 521 · SEA → SJC

Odds over time