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.

FRONTIER · FLIGHT F9 3666 LANDED 3:02 PM MT, ~18 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29

F9 3666 · SMF → DEN

took off 11:51 AM PT · landed 3:02 PM MT (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 7h after departure

Arrive at DEN more than 15 minutes late?

25% chance · ±0 pts – · 24h

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

What’s moving the odds

↑ F9's recent on-time record

↑ Other factors

↑ Arrivals into DEN at that hour are often late

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at SMF

Weather at each end

SMF (origin) Gusts23 kt Ceilingnone (clear) Visibility9 mi Precipnone

DEN (destination) Gusts9 kt Ceiling6,000 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.

F9 3666 · SMF → DEN

Odds over time