Schedule: the flights that flew on Friday, Oct 23, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 639 SCHEDULED · TYPICAL SCHEDULE

Friday, October 30 Tomorrow

UA 639 · BOS → LAX

departs 6:26 PM ET · arrives 9:51 PM PT

Forecast issued Thu 4:00 PM ET · 26h before departure

Arrive at LAX more than 15 minutes late?

41% chance · ±6 pts +8 pts · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to LAX?

On time or early
58%
15–30 min late
8%
30 min–1 hour late
20%
1–2 hours late
8%
Over 2 hours late
5%
Cancelled
<1%

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

What’s moving the odds

↑ Arrivals into LAX at that hour are often late

↑ Mostly benign weather forecast at LAX

↑ Later flights pick up delays from earlier in the day

↓ Mostly benign weather forecast at BOS

↓ Other factors

Weather at each end

BOS (origin) Gusts21 kt Ceiling11,000 ft Visibility10+ mi Precipnone

LAX (destination) Gusts11 kt Ceiling3,500 ft Visibility10+ mi Precip0.19 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 639 · BOS → LAX

Odds over time

How late will it get to LAX?