Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 2309SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 2309 · SAN → SFO
departs 11:01 AM PT · arrives 12:47 PM PT
Forecast issued Sat 7:00 AM ET · 31h before departure
Odds over time
Arrive at SFO more than 15 minutes late?
20%chance · ±2 pts+0 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to SFO?
On time or early
79%
15–30 min late
9%
30 min–1 hour late
2%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.