UA 487 · ORD → BOS

departs 3:58 PM CT · arrives 7:40 PM ET

Forecast issued Sun 7:00 AM ET · 10h before departure

Arrive at BOS more than 15 minutes late?

43% chance · ±0 pts – · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to BOS?

On time or early
57%
15–30 min late
5%
30 min–1 hour late
19%
1–2 hours late
15%
Over 2 hours late
4%
Cancelled
<1%

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

What’s moving the odds

↑ Arrivals into BOS at that hour are often late

↑ Cloud base down to 1,100 ft forecast at BOS that day

↑ 3pm departures from ORD are often late

↓ Mostly benign weather forecast at ORD

↓ Other factors

Weather at each end

ORD (origin) Gusts13 kt Ceilingnone (clear) Visibility10+ mi Precipnone

BOS (destination) Gusts15 kt Ceiling3,500 ft Visibility10+ mi Precip0.13 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 487 · ORD → BOS

Odds over time

How late will it get to BOS?