Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 4521 · Rochester (ROC) → Dulles (IAD)
Sold by United, flown by GoJet. Still flying: 27 of the last 56 days (Tue, Wed, Thu, Fri, Sun).
Arrives on time92%within 15 minutes, of 27 flights
Cancelled3.7%of scheduled flights
An hour or more late8%of flights that operated
When late, on average337 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves ROC
- 15:00
- Arrives IAD
- 16:21
- Flight time
- 1h 21m
- Days flown, last 8 weeks
- 27 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 ROC
All flights leaving Rochester (ROC) at 3–4 pm, wherever they’re going: 75% left within 15 minutes and 2.3% were cancelled (619 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.