Schedule: a typical summer Saturday (the flights of Jul 25, 2026), 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

Saturday, October 3 Tomorrow

UA 1387 · SFO → IAH

departs 12:15 PM PT · arrives 6:27 PM CT

Forecast issued Fri 7:00 AM ET · 32h before departure

Arrive at IAH more than 15 minutes late?

22% chance · ±1 pts −7 pts · 24h

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

How late will it get to IAH?

On time or early
77%
15–30 min late
10%
30 min–1 hour late
6%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
1%

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

What’s moving the odds

↑ Cloud base down to 900 ft forecast at IAH that day

↑ 12pm departures from SFO are often late

↑ Arrivals into IAH at that hour are often late

↓ Mostly benign weather forecast at SFO

↓ Other factors

Weather at each end

SFO (origin) Gusts12 kt Ceilingnone (clear) Visibility9 mi Precipnone

IAH (destination) Gusts14 kt Ceiling2,200 ft Visibility10+ mi Precip0.21 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 · SFO → IAH

Odds over time

How late will it get to IAH?