Schedule: the flights that flew on Tuesday, Oct 20, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 1387 SCHEDULED · TYPICAL SCHEDULE

Tuesday, October 27 Tomorrow

UA 1387 · ONT → SFO

departs 8:04 AM PT · arrives 9:37 AM PT

Forecast issued Tue 1:00 AM ET · 10h before departure

Arrive at SFO more than 15 minutes late?

32% chance · ±0 pts +13 pts · 24h

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

How late will it get to SFO?

On time or early
67%
15–30 min late
16%
30 min–1 hour late
7%
1–2 hours late
3%
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 SFO at that hour are often late

↑ SFO is prone to delays

↑ This flight has been late 30% of the time recently

↓ Mostly benign weather forecast at ONT

↓ Tuesdays in October are usually quieter than average

Weather at each end

ONT (origin) Gusts14 kt Ceilingnone (clear) Visibility10+ mi Precipnone

SFO (destination) Gusts22 kt Ceilingnone (clear) Visibility10+ mi Precip0.01 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 1387 · ONT → SFO

Odds over time

How late will it get to SFO?