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 1391SCHEDULED · TYPICAL SCHEDULE
UA 1391 · EWR → JAX
departs 3:24 PM ET · arrives 6:03 PM ET
Forecast issued Fri 6:00 AM ET · 57h before departure
Odds over time
Arrive at JAX more than 15 minutes late?
27%chance · ±2 pts– · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to JAX?
On time or early
71%
15–30 min late
5%
30 min–1 hour late
12%
1–2 hours late
4%
Over 2 hours late
6%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.