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.

DELTA · FLIGHT DL 631 LANDED 9:16 PM ET, ~22 MIN LATE · SCHEDULED TIME UNKNOWN

Friday, October 2

DL 631 · SFO → JFK

took off 1:39 PM PT · landed 9:16 PM ET (scheduled time unknown)

Forecast issued Fri 10:00 PM ET · 5h after departure

Arrive at JFK more than 15 minutes late?

58% chance · ±0 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

SFO (origin) Gusts10 kt Ceiling300 ft Visibility3 mi Precipnone

JFK (destination) Gusts24 kt Ceiling4,800 ft Visibility9 mi Precip0.01 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.

DL 631 · SFO → JFK

Odds over time