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 9421 LANDED 3:17 PM MT, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29 Today

F9 9421 · SAN → DEN

took off 12:28 PM PT · landed 3:17 PM MT (scheduled time unknown)

Forecast issued Tue 5:00 PM ET · 2h after departure

Arrive at DEN more than 15 minutes late?

37% chance · ±1 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

↓ Mostly benign weather forecast at SAN

↓ Mostly benign weather forecast at DEN

Weather at each end

SAN (origin) Gusts9 kt Ceiling2,300 ft Visibility10+ 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 9421 · SAN → DEN

Odds over time