Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 1841 · Sacramento (SMF) → Denver (DEN)
Sold by United. Still flying: 39 of the last 56 days (Mon, Wed, Thu, Fri, Sun).
Arrives on time82%within 15 minutes, of 217 flights
Cancelled1.4%of scheduled flights
An hour or more late8%of flights that operated
When late, on average87 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Denver is 1 h ahead of Sacramento).
- Leaves SMF
- 18:37
- Arrives DEN
- 21:59
- Flight time
- 2h 22m
- Days flown, last 8 weeks
- 39 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 SMF
All flights leaving Sacramento (SMF) at 6–7 pm, wherever they’re going: 71% left within 15 minutes and 0.6% were cancelled (2,731 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.