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 2401 LANDED 4:24 PM ET, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

Wednesday, September 30

UA 2401 · ORD → BOS

took off 1:36 PM CT · landed 4:24 PM ET (scheduled time unknown)

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

Arrive at BOS more than 15 minutes late?

69% chance · ±0 pts +11 pts · 24h

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

What’s moving the odds

↑ Cloud base down to 500 ft, visibility down to 1.75 mi, 0.9 in of rain forecast at ORD that day

↑ 1pm departures from ORD are often late

↑ Arrivals into BOS at that hour are often late

↓ Wednesdays in September are usually quieter than average

Weather at each end

ORD (origin) Gusts19 kt Ceiling500 ft Visibility1.75 mi Precip0.95 in

BOS (destination) Gusts8 kt Ceiling700 ft Visibility2 mi Precip0.02 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 2401 · ORD → BOS

Odds over time