Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
UNITED · FLIGHT UA 671SCHEDULED · TYPICAL SCHEDULE
UA 671 · JAX → DEN
departs 8:09 AM ET · arrives 9:55 AM MT
Forecast issued Wed 8:00 PM ET · 60h before departure
Odds over time
Arrive at DEN more than 15 minutes late?
10%chance · ±1 pts+3 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to DEN?
On time or early
90%
15–30 min late
4%
30 min–1 hour late
<1%
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%.