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 1257SCHEDULED · TYPICAL SCHEDULE
Today
UA 1257 · MIA → SFO
departs 8:00 AM ET · arrives 11:03 AM PT
Forecast issued Fri 10:00 PM ET · 10h before departure
Odds over time
Arrive at SFO more than 15 minutes late?
17%chance · ±0 pts+6 pts · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to SFO?
On time or early
82%
15–30 min late
10%
30 min–1 hour late
0%
1–2 hours late
6%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.