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 2851SCHEDULED · TYPICAL SCHEDULE
Today
UA 2851 · SFO → TPA
departs 2:37 PM PT · arrives 10:58 PM ET
Forecast issued Fri 10:00 PM ET · 4h after departure
Odds over time
Arrive at TPA more than 15 minutes late?
34%chance · ±1 pts+10 pts · 24h
HOW SURE WE AREVery high. The odds now come almost entirely from live conditions.
How late will it get to TPA?
On time or early
66%
15–30 min late
15%
30 min–1 hour late
12%
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%.