DL579
DL579 (Delta Air Lines) is a multi-stop service on 6 routes, busiest Salt Lake City to Atlanta. Of 194 departures recorded from June 2025 to July 2026, 80.3% left on time, according to the US BTS.
- On-time departures80.3%of 194 flights
- Average delay16.1 min
- July 202614▼ 12.5%vs July 2025
- Cancelled0.5%
- Legs flown under this number6
Recorded departures by month
Short series — DL579 has only 10 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods10 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 4 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 14 | 8 | ▼ 42.9% |
| July | 16 | 14 | ▼ 12.5% |
| August | 22 | – | – |
| September | 26 | – | – |
| October | 30 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
according to the US BTS · June 2025 → July 2026
On-time departures by month
Short series — DL579 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods10 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 100.0% | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 42.9% | 100.0% | ▲ 133.3% |
| July | 68.8% | 92.9% | ▲ 35.1% |
| August | 77.3% | – | – |
| September | 80.8% | – | – |
| October | 80.0% | – | in progress |
| November | 93.1% | – | – |
| December | 80.7% | – | – |
according to the US BTS · June 2025 → July 2026
Average departure delay by month
Short series — DL579 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · June 2025 → July 2026
Cancelled departures by month
Short series — DL579 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods10 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · June 2025 → 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 99.5% 193
- Cancelled 0.5% 1
Share of all recorded flights in the period, all legs. · Jun 8, 2025 → Jul 25, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC ATL Salt Lake City International Airport – Hartsfield Jackson Atlanta International Airport | 2,554 | 12.1 min | 81.6% | 103 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| June 2025 | 14 | 14 | 42.9% | 0 |
| July 2025 | 16 | 16 | 68.8% | 0 |
| August 2025 | 22 | 22 | 77.3% | 0 |
| September 2025 | 26 | 26 | 80.8% | 0 |
| October 2025 | 30 | 30 | 80.0% | 0 |
| November 2025 | 29 | 29 | 93.1% | 0 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 4 | 3 | 100.0% | 1 |
| June 2026 | 8 | 8 | 100.0% | 0 |
| July 2026 | 14 | 14 | 92.9% | 0 |