Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 2851SCHEDULED · TYPICAL SCHEDULE
UA 2851 · SFO → PDX
departs 2:55 PM PT · arrives 4:47 PM PT
Forecast issued Fri 11:00 PM ET · 67h before departure
Odds over time
Arrive at PDX more than 15 minutes late?
10%chance · ±0 pts– · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to PDX?
On time or early
90%
15–30 min late
0%
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%.