BA 49 · LHR → SEA

departs 4:30 PM BST · arrives 6:28 PM PT

Forecast issued Sun 6:00 AM ET · 6h before departure

Arrive at SEA more than 15 minutes late?

32% chance · ±0 pts +11 pts · 24h

HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.

How late will it get to SEA?

On time or early
66%
15–30 min late
24%
30 min–1 hour late
0%
1–2 hours late
6%
Over 2 hours late
2%
Cancelled
2%

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

What’s moving the odds

↑ Later flights pick up delays from earlier in the day

↑ This route's recent record

↑ 4pm departures from LHR are often late

↓ Mostly benign weather forecast at LHR

↓ Mostly benign weather forecast at SEA

Weather at each end

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

SEA (destination) Gusts13 kt Ceilingnone (clear) 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.

BA 49 · LHR → SEA

Odds over time

How late will it get to SEA?