BA 239 · LHR → BOS

took off 9:31 PM BST (scheduled 8:10 PM BST → 11:36 PM ET)

Forecast issued Mon 6:00 PM ET · 3h after departure

Arrive at BOS more than 15 minutes late?

35% chance · ±1 pts −2 pts · 24h

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

How late will it get to BOS?

On time or early
64%
15–30 min late
15%
30 min–1 hour late
9%
1–2 hours late
7%
Over 2 hours late
3%

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

↑ This route's recent record

↑ Later flights pick up delays from earlier in the day

↓ Mostly benign weather forecast at LHR

↓ BA's recent on-time record

Weather at each end

LHR (origin) Gusts8 kt Ceilingnone (clear) Visibility10+ mi Precipnone

BOS (destination) Gusts18 kt Ceiling400 ft Visibility2.5 mi Precip0.31 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.

BA 239 · LHR → BOS

Odds over time

How late will it get to BOS?