DL819
DL819 (Delta Air Lines) is a multi-stop service on 3 routes, busiest San Diego to Atlanta. Of 677 departures recorded from October 2024 to July 2026, 85.5% left on time, according to the US BTS.
- On-time departures85.5%of 677 flights
- Average delay7.0 min
- July 202646▲ 2.2%vs July 2025
- Cancelled0.9%
- Legs flown under this number3
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 | 26 | 29 | ▲ 11.5% |
| February | 28 | 28 | 0.0% |
| March | 31 | 7 | ▼ 77.4% |
| April | 30 | 18 | ▼ 40.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 45 | 46 | ▲ 2.2% |
| August | 51 | – | – |
| September | 40 | – | – |
| October | 31 | – | in progress |
| November | 52 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 221 | 189 | ▼ 14.5% |
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 | 92.3% | 92.6% | ▲ 0.3% |
| February | 92.9% | 92.9% | 0.0% |
| March | 90.3% | 71.4% | ▼ 20.9% |
| April | 100.0% | 83.3% | ▼ 16.7% |
| May | 93.6% | 90.3% | ▼ 3.5% |
| June | 66.7% | 96.6% | ▲ 44.8% |
| July | 81.4% | 76.1% | ▼ 6.5% |
| August | 80.4% | – | – |
| September | 85.0% | – | – |
| October | 74.2% | – | in progress |
| November | 82.4% | – | – |
| December | 81.5% | – | – |
| Year-to-date average (Jan–Jul) | 88.2% | 86.2% | ▼ 2.3% |
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 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 99.1% 671
- Cancelled 0.9% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN ATL San Diego International Airport – Hartsfield Jackson Atlanta International Airport | 3,038 | 4.3 min | 91.1% | 465 |
| ATL SAN Hartsfield Jackson Atlanta International Airport – San Diego International Airport | 3,038 | 12.3 min | 74.1% | 203 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 28 | 28 | 89.3% | 0 |
| December 2024 | 18 | 18 | 83.3% | 0 |
| January 2025 | 26 | 26 | 92.3% | 0 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 100.0% | 0 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 30 | 30 | 66.7% | 0 |
| July 2025 | 45 | 43 | 81.4% | 2 |
| August 2025 | 51 | 51 | 80.4% | 0 |
| September 2025 | 40 | 40 | 85.0% | 0 |
| October 2025 | 31 | 31 | 74.2% | 0 |
| November 2025 | 52 | 51 | 82.4% | 1 |
| December 2025 | 27 | 27 | 81.5% | 0 |
| January 2026 | 29 | 27 | 92.6% | 2 |
| February 2026 | 28 | 28 | 92.9% | 0 |
| March 2026 | 7 | 7 | 71.4% | 0 |
| April 2026 | 18 | 18 | 83.3% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 30 | 29 | 96.6% | 1 |
| July 2026 | 46 | 46 | 76.1% | 0 |