Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 3999 · Hartford (BDL) → Dulles (IAD)
Sold by United, flown by Mesa. Still flying: 47 of the last 56 days (Mon, Tue, Wed, Thu, Fri, Sun).
Arrives on time68%within 15 minutes, of 61 flights
Cancelled6.6%of scheduled flights
An hour or more late11%of flights that operated
When late, on average129 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves BDL
- 19:45
- Arrives IAD
- 21:14
- Flight time
- 1h 29m
- Days flown, last 8 weeks
- 47 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 BDL
All flights leaving Hartford (BDL) at 7–8 pm, wherever they’re going: 67% left within 15 minutes and 4.3% were cancelled (1,276 flights in the year). Other United flights on this route →
Upcoming forecasts
This flight isn’t in our published forecasts for the next few days.