Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 671 · Jacksonville (JAX) → Denver (DEN)
Sold by United. Still flying: 56 of the last 56 days (Daily).
Arrives on time90%within 15 minutes, of 165 flights
Cancelled0.0%of scheduled flights
An hour or more late5%of flights that operated
When late, on average105 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Denver is 2 h behind Jacksonville).
- Leaves JAX
- 08:09
- Arrives DEN
- 09:55
- Flight time
- 3h 46m
- Days flown, last 8 weeks
- 56 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at JAX
All flights leaving Jacksonville (JAX) at 8–9 am, wherever they’re going: 92% left within 15 minutes and 0.7% were cancelled (1,698 flights in the year). Other United flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.