DL770
DL770 (Delta Air Lines) is a multi-stop service on 8 routes, busiest Atlanta to Ontario. Of 615 departures recorded from October 2024 to July 2026, 80.9% left on time, according to the US BTS.
- On-time departures80.9%of 615 flights
- Average delay10.5 min
- July 202624▼ 17.2%vs July 2025
- Cancelled1.5%
- Legs flown under this number8
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 54 | 31 | ▼ 42.6% |
| April | 43 | 30 | ▼ 30.2% |
| May | 19 | 26 | ▲ 36.8% |
| June | 27 | 5 | ▼ 81.5% |
| July | 29 | 24 | ▼ 17.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 231 | 175 | ▼ 24.2% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 80.7% | 76.7% | ▼ 4.9% |
| February | 82.1% | 89.3% | ▲ 8.7% |
| March | 85.2% | 76.7% | ▼ 10.0% |
| April | 88.4% | 83.3% | ▼ 5.7% |
| May | 84.2% | 76.9% | ▼ 8.7% |
| June | 50.0% | 100.0% | ▲ 100.0% |
| July | 67.9% | 81.0% | ▲ 19.3% |
| August | 80.0% | – | – |
| September | 90.0% | – | – |
| October | 83.9% | – | in progress |
| November | 89.3% | – | – |
| December | 67.9% | – | – |
| Year-to-date average (Jan–Jul) | 76.9% | 83.4% | ▲ 8.4% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 3 | ▲ 200.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.5% 606
- Cancelled 1.5% 9
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 30, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL ONT Hartsfield Jackson Atlanta International Airport – Ontario International Airport | 3,050 | 12.0 min | 78.7% | 310 |
| RSW MSP Southwest Florida International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 2,282 | 9.8 min | 80.4% | 98 |
| PHX MSP Phoenix Sky Harbor International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 2,051 | 17.4 min | 83.9% | 62 |
| SFO SEA San Francisco International Airport – Seattle–Tacoma International Airport | 1,093 | 2.0 min | 88.9% | 36 |
| SEA SFO Seattle–Tacoma International Airport – San Francisco International Airport | 1,093 | 4.7 min | 80.6% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 66.7% | 0 |
| November 2024 | 19 | 19 | 89.5% | 0 |
| December 2024 | 29 | 29 | 89.7% | 0 |
| January 2025 | 31 | 31 | 80.7% | 0 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 54 | 54 | 85.2% | 0 |
| April 2025 | 43 | 43 | 88.4% | 0 |
| May 2025 | 19 | 19 | 84.2% | 0 |
| June 2025 | 27 | 26 | 50.0% | 1 |
| July 2025 | 29 | 28 | 67.9% | 1 |
| August 2025 | 31 | 30 | 80.0% | 1 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 28 | 28 | 89.3% | 0 |
| December 2025 | 29 | 28 | 67.9% | 1 |
| January 2026 | 31 | 30 | 76.7% | 1 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 30 | 76.7% | 1 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 26 | 26 | 76.9% | 0 |
| June 2026 | 5 | 5 | 100.0% | 0 |
| July 2026 | 24 | 21 | 81.0% | 3 |