Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 665 · Ontario (ONT) → Atlanta (ATL)
Sold by Delta. Still flying: 56 of the last 56 days (Daily).
Arrives on time85%within 15 minutes, of 365 flights
Cancelled1.6%of scheduled flights
An hour or more late7%of flights that operated
When late, on average73 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Atlanta is 3 h ahead of Ontario).
- Leaves ONT
- 11:50
- Arrives ATL
- 19:11
- Flight time
- 4h 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 ONT
All flights leaving Ontario (ONT) at 11 am–12 pm, wherever they’re going: 83% left within 15 minutes and 1.0% were cancelled (1,420 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.