Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 509 · Detroit (DTW) → San Francisco (SFO)
Sold by Delta. Still flying: 32 of the last 56 days (Mon, Thu, Fri, Sun).
Arrives on time55%within 15 minutes, of 143 flights
Cancelled0.7%of scheduled flights
An hour or more late15%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 (San Francisco is 3 h behind Detroit).
- Leaves DTW
- 18:55
- Arrives SFO
- 20:59
- Flight time
- 5h 04m
- Days flown, last 8 weeks
- 32 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 DTW
All flights leaving Detroit (DTW) at 6–7 pm, wherever they’re going: 72% left within 15 minutes and 2.0% were cancelled (5,300 flights in the year). Other Delta flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.