DL660
DL660 (Delta Air Lines) flies Atlanta to Salt Lake City. Of 650 departures recorded from October 2024 to July 2026, 70.8% left on time, according to the US BTS.
- On-time departures70.8%of 650 flights
- Average delay16.9 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.3%
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 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 27 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 212 | 212 | 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 | 61.3% | 77.4% | ▲ 26.3% |
| February | 82.1% | 64.3% | ▼ 21.7% |
| March | 71.0% | 90.0% | ▲ 26.8% |
| April | 66.7% | 90.0% | ▲ 35.0% |
| May | 61.3% | 77.4% | ▲ 26.3% |
| June | 37.9% | 76.7% | ▲ 102.1% |
| July | 51.6% | 51.6% | 0.0% |
| August | 74.2% | – | – |
| September | 80.0% | – | – |
| October | 66.7% | – | in progress |
| November | 59.3% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 61.7% | 75.3% | ▲ 22.1% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 0.0% |
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 99.7% 648
- Cancelled 0.3% 2
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 SLC Hartsfield Jackson Atlanta International Airport – Salt Lake City International Airport | 2,554 | 16.9 min | 70.8% | 650 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 88.9% | 0 |
| November 2024 | 28 | 28 | 85.7% | 0 |
| December 2024 | 31 | 31 | 74.2% | 0 |
| January 2025 | 31 | 31 | 61.3% | 0 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 31 | 31 | 71.0% | 0 |
| April 2025 | 30 | 30 | 66.7% | 0 |
| May 2025 | 31 | 31 | 61.3% | 0 |
| June 2025 | 30 | 29 | 37.9% | 1 |
| July 2025 | 31 | 31 | 51.6% | 0 |
| August 2025 | 31 | 31 | 74.2% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 30 | 30 | 66.7% | 0 |
| November 2025 | 27 | 27 | 59.3% | 0 |
| December 2025 | 31 | 31 | 77.4% | 0 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 28 | 28 | 64.3% | 0 |
| March 2026 | 31 | 30 | 90.0% | 1 |
| April 2026 | 30 | 30 | 90.0% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 30 | 30 | 76.7% | 0 |
| July 2026 | 31 | 31 | 51.6% | 0 |