DL1667
DL1667 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Salt Lake City to Denver. Of 546 departures recorded from October 2024 to July 2026, 75.8% left on time, according to the US BTS.
- On-time departures75.8%of 546 flights
- Average delay12.8 min
- July 202630▲ 30.4%vs July 2025
- Cancelled0.0%
- Legs flown under this number2
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 | 27 | 11 | ▼ 59.3% |
| February | 24 | 25 | ▲ 4.2% |
| March | 26 | 28 | ▲ 7.7% |
| April | 26 | 26 | 0.0% |
| May | 26 | 30 | ▲ 15.4% |
| June | 24 | 27 | ▲ 12.5% |
| July | 23 | 30 | ▲ 30.4% |
| August | 26 | – | – |
| September | 22 | – | – |
| October | 22 | – | in progress |
| November | 23 | – | – |
| December | 26 | – | – |
| Year to date (Jan–Jul) | 176 | 177 | ▲ 0.6% |
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 | 88.9% | 72.7% | ▼ 18.2% |
| February | 83.3% | 80.0% | ▼ 4.0% |
| March | 76.9% | 75.0% | ▼ 2.5% |
| April | 73.1% | 65.4% | ▼ 10.5% |
| May | 80.8% | 83.3% | ▲ 3.2% |
| June | 62.5% | 70.4% | ▲ 12.6% |
| July | 43.5% | 70.0% | ▲ 61.0% |
| August | 69.2% | – | – |
| September | 77.3% | – | – |
| October | 77.3% | – | in progress |
| November | 87.0% | – | – |
| December | 73.1% | – | – |
| Year-to-date average (Jan–Jul) | 72.7% | 73.8% | ▲ 1.5% |
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 | 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 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 100.0% 546
- 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 | 13.1 min | 75.7% | 522 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 89.5% | 0 |
| November 2024 | 27 | 27 | 85.2% | 0 |
| December 2024 | 28 | 28 | 82.1% | 0 |
| January 2025 | 27 | 27 | 88.9% | 0 |
| February 2025 | 24 | 24 | 83.3% | 0 |
| March 2025 | 26 | 26 | 76.9% | 0 |
| April 2025 | 26 | 26 | 73.1% | 0 |
| May 2025 | 26 | 26 | 80.8% | 0 |
| June 2025 | 24 | 24 | 62.5% | 0 |
| July 2025 | 23 | 23 | 43.5% | 0 |
| August 2025 | 26 | 26 | 69.2% | 0 |
| September 2025 | 22 | 22 | 77.3% | 0 |
| October 2025 | 22 | 22 | 77.3% | 0 |
| November 2025 | 23 | 23 | 87.0% | 0 |
| December 2025 | 26 | 26 | 73.1% | 0 |
| January 2026 | 11 | 11 | 72.7% | 0 |
| February 2026 | 25 | 25 | 80.0% | 0 |
| March 2026 | 28 | 28 | 75.0% | 0 |
| April 2026 | 26 | 26 | 65.4% | 0 |
| May 2026 | 30 | 30 | 83.3% | 0 |
| June 2026 | 27 | 27 | 70.4% | 0 |
| July 2026 | 30 | 30 | 70.0% | 0 |