Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 504 · Baltimore (BWI) → San Francisco (SFO)
Sold by United. Still flying: 40 of the last 56 days (Mon, Thu, Fri, Sat, Sun).
Arrives on time56%within 15 minutes, of 167 flights
Cancelled1.8%of scheduled flights
An hour or more late12%of flights that operated
When late, on average55 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (San Francisco is 3 h behind Baltimore).
- Leaves BWI
- 18:59
- Arrives SFO
- 21:50
- Flight time
- 5h 51m
- Days flown, last 8 weeks
- 40 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 BWI
All flights leaving Baltimore (BWI) at 6–7 pm, wherever they’re going: 65% left within 15 minutes and 2.2% were cancelled (6,845 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.