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 2661SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 2661 · SFO → ONT
departs 10:40 AM PT · arrives 12:12 PM PT
Forecast issued Sat 1:00 AM ET · 13h before departure
Odds over time
Arrive at ONT more than 15 minutes late?
32%chance · ±0 pts+18 pts · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to ONT?
On time or early
67%
15–30 min late
21%
30 min–1 hour late
4%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.