Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 336 · San Francisco (SFO) → Dulles (IAD)
Sold by United. Still flying: 56 of the last 56 days (Daily).
Arrives on time78%within 15 minutes, of 207 flights
Cancelled0.5%of scheduled flights
An hour or more late10%of flights that operated
When late, on average97 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Dulles is 3 h ahead of San Francisco).
- Leaves SFO
- 10:50
- Arrives IAD
- 19:11
- Flight time
- 5h 21m
- 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 SFO
All flights leaving San Francisco (SFO) at 10–11 am, wherever they’re going: 73% left within 15 minutes and 0.7% were cancelled (12,582 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.