UA 721 · BOS → IAD

took off 3:03 PM ET · landed 4:28 PM ET (scheduled 2:15 PM ET → 3:57 PM ET)

Forecast issued Tue 7:00 PM ET · 5h after departure

Arrive at IAD more than 15 minutes late?

Late chance · ±0 pts +0 pts · 24h

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

How late did it get to IAD?

RESOLVED

On time or early
–
15–30 min late
–
30 min–1 hour late
✓
1–2 hours late
–
Over 2 hours late
–

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ 2pm departures from BOS are often late

↑ Later flights pick up delays from earlier in the day

↑ BOS is prone to delays

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at IAD

Weather at each end

BOS (origin) Gusts11 kt Ceiling600 ft Visibility1.5 mi Precip0.01 in

IAD (destination) Gusts9 kt Ceiling4,200 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.

UA 721 · BOS → IAD

Odds over time

How late did it get to IAD?