Schedule: a typical summer Friday (the flights of Jul 31, 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
Today
UA 2309 · DEN → SAN
departs 7:43 AM MT · arrives 9:05 AM PT
Forecast issued Fri 10:00 PM ET · 12h after departure
Odds over time
Arrive at SAN more than 15 minutes late?
16%chance · ±0 pts−12 pts · 24h
HOW SURE WE AREVery high. The odds now come almost entirely from live conditions.
How late will it get to SAN?
On time or early
84%
15–30 min late
8%
30 min–1 hour late
4%
1–2 hours late
3%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.