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.

UNITED · FLIGHT UA 3935 LANDED 5:56 AM MT, ~10 MIN LATE · SCHEDULED TIME UNKNOWN

Wednesday, September 30

UA 3935 · DEN → GTF

took off 4:27 AM MT · landed 5:56 AM MT (scheduled time unknown)

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

Arrive at GTF more than 15 minutes late?

12% 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

↑ Gusts to 28 kt forecast at GTF that day

↑ DEN is busy at that time

↑ Other factors

↓ Early flights usually leave on time

↓ Mostly benign weather forecast at DEN

Weather at each end

DEN (origin) Gusts20 kt Ceiling8,000 ft Visibility10+ mi Precip0.03 in

GTF (destination) Gusts28 kt Ceiling2,400 ft Visibility10+ mi Precip0.08 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.

UA 3935 · DEN → GTF

Odds over time