DL823
DL823 (Delta Air Lines) flies Atlanta to San Francisco. Of 651 departures recorded from October 2024 to July 2026, 78.8% left on time, according to the US BTS.
- On-time departures78.8%of 651 flights
- Average delay11.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.8%
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 29 | ▼ 6.5% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 29 | 30 | ▲ 3.4% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 210 | 210 | 0.0% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 86.7% | 78.6% | ▼ 9.3% |
| February | 78.6% | 75.0% | ▼ 4.5% |
| March | 80.7% | 80.0% | ▼ 0.8% |
| April | 79.3% | 83.3% | ▲ 5.1% |
| May | 80.0% | 74.2% | ▼ 7.3% |
| June | 73.3% | 66.7% | ▼ 9.1% |
| July | 77.4% | 76.7% | ▼ 1.0% |
| August | 77.4% | – | – |
| September | 93.3% | – | – |
| October | 77.4% | – | in progress |
| November | 79.3% | – | – |
| December | 70.0% | – | – |
| Year-to-date average (Jan–Jul) | 79.4% | 76.3% | ▼ 3.9% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 99.2% 646
- Cancelled 0.8% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL SFO Hartsfield Jackson Atlanta International Airport – San Francisco International Airport | 3,435 | 11.8 min | 78.8% | 651 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 29 | 29 | 79.3% | 0 |
| December 2024 | 31 | 31 | 77.4% | 0 |
| January 2025 | 31 | 30 | 86.7% | 1 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 29 | 29 | 79.3% | 0 |
| May 2025 | 30 | 30 | 80.0% | 0 |
| June 2025 | 30 | 30 | 73.3% | 0 |
| July 2025 | 31 | 31 | 77.4% | 0 |
| August 2025 | 31 | 31 | 77.4% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 77.4% | 0 |
| November 2025 | 29 | 29 | 79.3% | 0 |
| December 2025 | 31 | 30 | 70.0% | 1 |
| January 2026 | 29 | 28 | 78.6% | 1 |
| February 2026 | 28 | 28 | 75.0% | 0 |
| March 2026 | 31 | 30 | 80.0% | 1 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 74.2% | 0 |
| June 2026 | 30 | 30 | 66.7% | 0 |
| July 2026 | 31 | 30 | 76.7% | 1 |