DL397
DL397 (Delta Air Lines) is a multi-stop service on 10 routes, busiest Kahului to Salt Lake City. Of 833 departures recorded from October 2024 to July 2026, 85.8% left on time, according to the US BTS.
- On-time departures85.8%of 833 flights
- Average delay7.6 min
- July 202631▼ 50.0%vs July 2025
- Cancelled2.8%
- Legs flown under this number10
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 | 31 | 58 | ▲ 87.1% |
| February | 28 | 56 | ▲ 100.0% |
| March | 31 | 38 | ▲ 22.6% |
| April | 17 | 30 | ▲ 76.5% |
| May | 23 | 31 | ▲ 34.8% |
| June | 52 | 30 | ▼ 42.3% |
| July | 62 | 31 | ▼ 50.0% |
| August | 62 | – | – |
| September | 34 | – | – |
| October | 33 | – | in progress |
| November | 56 | – | – |
| December | 49 | – | – |
| Year to date (Jan–Jul) | 244 | 274 | ▲ 12.3% |
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 | 82.8% | 80.7% | ▼ 2.5% |
| February | 92.6% | 87.3% | ▼ 5.7% |
| March | 96.8% | 84.9% | ▼ 12.3% |
| April | 100.0% | 100.0% | 0.0% |
| May | 78.3% | 96.3% | ▲ 23.1% |
| June | 73.1% | 96.7% | ▲ 32.3% |
| July | 74.2% | 89.7% | ▲ 20.9% |
| August | 85.5% | – | – |
| September | 85.3% | – | – |
| October | 90.3% | – | in progress |
| November | 89.3% | – | – |
| December | 77.1% | – | – |
| Year-to-date average (Jan–Jul) | 85.4% | 90.8% | ▲ 6.3% |
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 | 2 | 1 | ▼ 50.0% |
| February | 1 | 1 | 0.0% |
| March | 0 | 5 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 4 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 4 | 14 | ▲ 250.0% |
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 97.2% 810
- Cancelled 2.8% 23
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| OGG SLC Kahului International Airport – Salt Lake City International Airport | 4,720 | 2.6 min | 91.5% | 422 |
| SLC OGG Salt Lake City International Airport – Kahului International Airport | 4,720 | 15.5 min | 80.4% | 139 |
| FAI MSP Fairbanks International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 3,959 | 21.4 min | 73.9% | 92 |
| MSP FAI Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Fairbanks International Airport | 3,959 | 7.3 min | 80.4% | 92 |
| DCA ATL Ronald Reagan Washington National Airport – Hartsfield Jackson Atlanta International Airport | 880 | 10.5 min | 83.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 29 | 89.7% | 1 |
| December 2024 | 31 | 30 | 86.7% | 1 |
| January 2025 | 31 | 29 | 82.8% | 2 |
| February 2025 | 28 | 27 | 92.6% | 1 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 17 | 16 | 100.0% | 1 |
| May 2025 | 23 | 23 | 78.3% | 0 |
| June 2025 | 52 | 52 | 73.1% | 0 |
| July 2025 | 62 | 62 | 74.2% | 0 |
| August 2025 | 62 | 62 | 85.5% | 0 |
| September 2025 | 34 | 34 | 85.3% | 0 |
| October 2025 | 33 | 31 | 90.3% | 2 |
| November 2025 | 56 | 56 | 89.3% | 0 |
| December 2025 | 49 | 48 | 77.1% | 1 |
| January 2026 | 58 | 57 | 80.7% | 1 |
| February 2026 | 56 | 55 | 87.3% | 1 |
| March 2026 | 38 | 33 | 84.9% | 5 |
| April 2026 | 30 | 29 | 100.0% | 1 |
| May 2026 | 31 | 27 | 96.3% | 4 |
| June 2026 | 30 | 30 | 96.7% | 0 |
| July 2026 | 31 | 29 | 89.7% | 2 |