DL1586
DL1586 (Delta Air Lines) flies Salt Lake City to Denver. Of 635 departures recorded from October 2024 to July 2026, 70.1% left on time, according to the US BTS.
- On-time departures70.1%of 635 flights
- Average delay22.0 min
- July 202630▼ 3.2%vs July 2025
- Cancelled0.0%
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 | 27 | ▼ 3.6% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 30 | ▼ 3.2% |
| June | 30 | 27 | ▼ 10.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 25 | – | – |
| December | 25 | – | – |
| Year to date (Jan–Jul) | 212 | 206 | ▼ 2.8% |
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 | 90.3% | 87.1% | ▼ 3.6% |
| February | 53.6% | 77.8% | ▲ 45.2% |
| March | 77.4% | 67.7% | ▼ 12.5% |
| April | 60.0% | 76.7% | ▲ 27.8% |
| May | 51.6% | 90.0% | ▲ 74.4% |
| June | 43.3% | 74.1% | ▲ 70.9% |
| July | 29.0% | 50.0% | ▲ 72.2% |
| August | 51.7% | – | – |
| September | 76.9% | – | – |
| October | 93.6% | – | in progress |
| November | 88.0% | – | – |
| December | 68.0% | – | – |
| Year-to-date average (Jan–Jul) | 57.9% | 74.8% | ▲ 29.1% |
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 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 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 100.0% 635
- Cancelled 0.0% 0
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 |
|---|---|---|---|---|
| SLC DEN Salt Lake City International Airport – Denver International Airport | 628 | 22.0 min | 70.1% | 635 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 31 | 31 | 77.4% | 0 |
| January 2025 | 31 | 31 | 90.3% | 0 |
| February 2025 | 28 | 28 | 53.6% | 0 |
| March 2025 | 31 | 31 | 77.4% | 0 |
| April 2025 | 30 | 30 | 60.0% | 0 |
| May 2025 | 31 | 31 | 51.6% | 0 |
| June 2025 | 30 | 30 | 43.3% | 0 |
| July 2025 | 31 | 31 | 29.0% | 0 |
| August 2025 | 29 | 29 | 51.7% | 0 |
| September 2025 | 26 | 26 | 76.9% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 25 | 25 | 88.0% | 0 |
| December 2025 | 25 | 25 | 68.0% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 27 | 27 | 77.8% | 0 |
| March 2026 | 31 | 31 | 67.7% | 0 |
| April 2026 | 30 | 30 | 76.7% | 0 |
| May 2026 | 30 | 30 | 90.0% | 0 |
| June 2026 | 27 | 27 | 74.1% | 0 |
| July 2026 | 30 | 30 | 50.0% | 0 |