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.

ALLEGIANT · FLIGHT G4 4915 LANDED 7:51 AM ET, ~2 MIN EARLY · SCHEDULED TIME UNKNOWN

Wednesday, September 30

G4 4915 · SFB → IAD

took off 6:07 AM ET · landed 7:51 AM ET (scheduled time unknown)

Forecast issued Wed 10:00 PM ET · 16h after departure

Arrive at IAD more than 15 minutes late?

5% chance · ±0 pts −1 pt · 24h

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

What’s moving the odds

↑ G4's recent on-time record

↑ This route's recent record

↓ Early flights usually leave on time

↓ Other factors

Weather at each end

SFB (origin) Gusts8 kt Ceiling7,500 ft Visibility10+ mi Precip0.21 in

IAD (destination) Gusts8 kt Ceiling5,000 ft Visibility6 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.

G4 4915 · SFB → IAD

Odds over time