DL1451
DL1451 (Delta Air Lines) is a multi-stop service on 4 routes, busiest Salt Lake City to Phoenix. Of 858 departures recorded from October 2024 to July 2026, 84.1% left on time, according to the US BTS.
- On-time departures84.1%of 858 flights
- Average delay4.4 min
- July 202648▲ 4.3%vs July 2025
- Cancelled0.1%
- Legs flown under this number4
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 | 44 | 20 | ▼ 54.5% |
| February | 44 | 25 | ▼ 43.2% |
| March | 52 | 51 | ▼ 1.9% |
| April | 52 | 54 | ▲ 3.8% |
| May | 50 | 50 | 0.0% |
| June | 48 | 46 | ▼ 4.2% |
| July | 46 | 48 | ▲ 4.3% |
| August | 28 | – | – |
| September | 17 | – | – |
| October | 23 | – | in progress |
| November | 19 | – | – |
| December | 35 | – | – |
| Year to date (Jan–Jul) | 336 | 294 | ▼ 12.5% |
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 | 88.6% | 95.0% | ▲ 7.2% |
| February | 81.8% | 80.0% | ▼ 2.2% |
| March | 67.3% | 86.3% | ▲ 28.2% |
| April | 75.0% | 90.7% | ▲ 21.0% |
| May | 94.0% | 88.0% | ▼ 6.4% |
| June | 85.4% | 76.1% | ▼ 10.9% |
| July | 82.6% | 72.3% | ▼ 12.4% |
| August | 85.7% | – | – |
| September | 88.2% | – | – |
| October | 91.3% | – | in progress |
| November | 94.7% | – | – |
| December | 80.0% | – | – |
| Year-to-date average (Jan–Jul) | 82.1% | 84.1% | ▲ 2.4% |
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 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.9% 857
- Cancelled 0.1% 1
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC PHX Salt Lake City International Airport – Phoenix Sky Harbor International Airport | 818 | 5.2 min | 83.8% | 464 |
| PHX SLC Phoenix Sky Harbor International Airport – Salt Lake City International Airport | 818 | 2.2 min | 85.7% | 371 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 24 | 24 | 95.8% | 0 |
| November 2024 | 32 | 32 | 90.6% | 0 |
| December 2024 | 50 | 50 | 86.0% | 0 |
| January 2025 | 44 | 44 | 88.6% | 0 |
| February 2025 | 44 | 44 | 81.8% | 0 |
| March 2025 | 52 | 52 | 67.3% | 0 |
| April 2025 | 52 | 52 | 75.0% | 0 |
| May 2025 | 50 | 50 | 94.0% | 0 |
| June 2025 | 48 | 48 | 85.4% | 0 |
| July 2025 | 46 | 46 | 82.6% | 0 |
| August 2025 | 28 | 28 | 85.7% | 0 |
| September 2025 | 17 | 17 | 88.2% | 0 |
| October 2025 | 23 | 23 | 91.3% | 0 |
| November 2025 | 19 | 19 | 94.7% | 0 |
| December 2025 | 35 | 35 | 80.0% | 0 |
| January 2026 | 20 | 20 | 95.0% | 0 |
| February 2026 | 25 | 25 | 80.0% | 0 |
| March 2026 | 51 | 51 | 86.3% | 0 |
| April 2026 | 54 | 54 | 90.7% | 0 |
| May 2026 | 50 | 50 | 88.0% | 0 |
| June 2026 | 46 | 46 | 76.1% | 0 |
| July 2026 | 48 | 47 | 72.3% | 1 |