DL1579
DL1579 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Atlanta to Miami. Of 1,226 departures recorded from October 2024 to July 2026, 72.1% left on time, according to the US BTS.
- On-time departures72.1%of 1,226 flights
- Average delay19.6 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number5
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 | 62 | 54 | ▼ 12.9% |
| February | 56 | 56 | 0.0% |
| March | 62 | 38 | ▼ 38.7% |
| April | 60 | 48 | ▼ 20.0% |
| May | 62 | 62 | 0.0% |
| June | 60 | 60 | 0.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 62 | – | – |
| Year to date (Jan–Jul) | 424 | 380 | ▼ 10.4% |
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 | 67.8% | 74.1% | ▲ 9.2% |
| February | 69.6% | 66.1% | ▼ 5.1% |
| March | 55.7% | 62.2% | ▲ 11.5% |
| April | 86.7% | 87.5% | ▲ 1.0% |
| May | 83.9% | 77.4% | ▼ 7.7% |
| June | 65.0% | 88.3% | ▲ 35.9% |
| July | 56.5% | 58.1% | ▲ 2.9% |
| August | 59.7% | – | – |
| September | 78.3% | – | – |
| October | 66.7% | – | in progress |
| November | 76.7% | – | – |
| December | 65.0% | – | – |
| Year-to-date average (Jan–Jul) | 69.3% | 73.4% | ▲ 5.9% |
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 | 3 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 99.3% 1,217
- Cancelled 0.7% 9
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL MIA Hartsfield Jackson Atlanta International Airport – Miami International Airport | 959 | 11.7 min | 77.3% | 600 |
| MIA ATL Miami International Airport – Hartsfield Jackson Atlanta International Airport | 959 | 30.4 min | 63.8% | 564 |
| CLE ATL Cleveland Hopkins International Airport – Hartsfield Jackson Atlanta International Airport | 894 | -3.3 min | 96.7% | 30 |
| ATL CLE Hartsfield Jackson Atlanta International Airport – Cleveland Hopkins International Airport | 894 | -3.9 min | 100.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 97.5% | 0 |
| November 2024 | 21 | 21 | 95.2% | 0 |
| December 2024 | 55 | 55 | 70.9% | 0 |
| January 2025 | 62 | 59 | 67.8% | 3 |
| February 2025 | 56 | 56 | 69.6% | 0 |
| March 2025 | 62 | 61 | 55.7% | 1 |
| April 2025 | 60 | 60 | 86.7% | 0 |
| May 2025 | 62 | 62 | 83.9% | 0 |
| June 2025 | 60 | 60 | 65.0% | 0 |
| July 2025 | 62 | 62 | 56.5% | 0 |
| August 2025 | 62 | 62 | 59.7% | 0 |
| September 2025 | 60 | 60 | 78.3% | 0 |
| October 2025 | 62 | 60 | 66.7% | 2 |
| November 2025 | 60 | 60 | 76.7% | 0 |
| December 2025 | 62 | 60 | 65.0% | 2 |
| January 2026 | 54 | 54 | 74.1% | 0 |
| February 2026 | 56 | 56 | 66.1% | 0 |
| March 2026 | 38 | 37 | 62.2% | 1 |
| April 2026 | 48 | 48 | 87.5% | 0 |
| May 2026 | 62 | 62 | 77.4% | 0 |
| June 2026 | 60 | 60 | 88.3% | 0 |
| July 2026 | 62 | 62 | 58.1% | 0 |