Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 3579 · Dulles (IAD) → Pittsburgh (PIT)
Sold by United, flown by Republic. Still flying: 55 of the last 56 days (Daily).
Arrives on time73%within 15 minutes, of 71 flights
Cancelled5.6%of scheduled flights
An hour or more late11%of flights that operated
When late, on average79 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves IAD
- 17:30
- Arrives PIT
- 18:40
- Flight time
- 1h 10m
- Days flown, last 8 weeks
- 55 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 IAD
All flights leaving Dulles (IAD) at 5–6 pm, wherever they’re going: 79% left within 15 minutes and 2.0% were cancelled (21,104 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.