DL1738
DL1738 (Delta Air Lines) is a multi-stop service on 3 routes, busiest Salt Lake City to Phoenix. Of 897 departures recorded from October 2024 to July 2026, 83.3% left on time, according to the US BTS.
- On-time departures83.3%of 897 flights
- Average delay10.1 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.0%
- Legs flown under this number3
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 46 | – |
| February | – | 18 | – |
| March | 22 | 48 | ▲ 118.2% |
| April | 56 | 42 | ▼ 25.0% |
| May | 62 | 56 | ▼ 9.7% |
| June | 60 | 60 | 0.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 40 | – | – |
| December | 21 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 87.0% | – |
| February | – | 100.0% | – |
| March | 86.4% | 85.4% | ▼ 1.1% |
| April | 75.0% | 90.5% | ▲ 20.6% |
| May | 80.7% | 83.9% | ▲ 4.1% |
| June | 81.7% | 90.0% | ▲ 10.2% |
| July | 88.7% | 87.1% | ▼ 1.8% |
| August | 80.7% | – | – |
| September | 95.0% | – | – |
| October | 83.9% | – | in progress |
| November | 62.5% | – | – |
| December | 71.4% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 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 | – | – |
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% 897
- Cancelled 0.0% 0
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC PHX Salt Lake City International Airport – Phoenix Sky Harbor International Airport | 818 | 9.7 min | 82.9% | 450 |
| PHX SLC Phoenix Sky Harbor International Airport – Salt Lake City International Airport | 818 | 7.1 min | 85.6% | 389 |
| LGA BOS LaGuardia Airport – Boston Logan International Airport | 296 | 34.0 min | 70.7% | 58 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 82.4% | 0 |
| November 2024 | 23 | 23 | 69.6% | 0 |
| December 2024 | 18 | 18 | 61.1% | 0 |
| March 2025 | 22 | 22 | 86.4% | 0 |
| April 2025 | 56 | 56 | 75.0% | 0 |
| May 2025 | 62 | 62 | 80.7% | 0 |
| June 2025 | 60 | 60 | 81.7% | 0 |
| July 2025 | 62 | 62 | 88.7% | 0 |
| August 2025 | 62 | 62 | 80.7% | 0 |
| September 2025 | 60 | 60 | 95.0% | 0 |
| October 2025 | 62 | 62 | 83.9% | 0 |
| November 2025 | 40 | 40 | 62.5% | 0 |
| December 2025 | 21 | 21 | 71.4% | 0 |
| January 2026 | 46 | 46 | 87.0% | 0 |
| February 2026 | 18 | 18 | 100.0% | 0 |
| March 2026 | 48 | 48 | 85.4% | 0 |
| April 2026 | 42 | 42 | 90.5% | 0 |
| May 2026 | 56 | 56 | 83.9% | 0 |
| June 2026 | 60 | 60 | 90.0% | 0 |
| July 2026 | 62 | 62 | 87.1% | 0 |