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 509 LANDED 6:39 PM MT, ~12 MIN LATE · SCHEDULED TIME UNKNOWN

Wednesday, September 30 Yesterday

DL 509 · JAC → SLC

took off 6:01 PM MT · landed 6:39 PM MT (scheduled time unknown)

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

Arrive at SLC more than 15 minutes late?

18% chance · ±0 pts +6 pts · 24h

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

What’s moving the odds

↑ Other factors

↑ Later flights pick up delays from earlier in the day

↑ DL's recent on-time record

↓ Mostly benign weather forecast at JAC

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

Weather at each end

JAC (origin) Gusts8 kt Ceilingnone (clear) Visibility10+ mi Precipnone

SLC (destination) Gusts17 kt Ceilingnone (clear) 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.

DL 509 · JAC → SLC

Odds over time