DL2399
DL2399 (Delta Air Lines) is a multi-stop service on 4 routes, busiest Los Angeles to Detroit. Of 503 departures recorded from October 2024 to July 2026, 92.4% left on time, according to the US BTS.
- On-time departures92.4%of 503 flights
- Average delay1.1 min
- July 202629▼ 6.5%vs July 2025
- Cancelled0.4%
- Legs flown under this number4
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 20 | ▼ 33.3% |
| July | 31 | 29 | ▼ 6.5% |
| August | 4 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 12 | – | – |
| Year to date (Jan–Jul) | 212 | 200 | ▼ 5.7% |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 90.3% | 93.6% | ▲ 3.6% |
| February | 96.4% | 92.9% | ▼ 3.7% |
| March | 96.8% | 100.0% | ▲ 3.3% |
| April | 96.6% | 93.3% | ▼ 3.3% |
| May | 93.6% | 100.0% | ▲ 6.9% |
| June | 83.3% | 95.0% | ▲ 14.0% |
| July | 96.8% | 89.7% | ▼ 7.3% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 93.4% | 94.9% | ▲ 1.6% |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 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 99.6% 501
- Cancelled 0.4% 2
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX DTW Los Angeles International Airport – Detroit Metropolitan Wayne County Airport | 3,178 | 0.6 min | 93.8% | 440 |
| PHL ATL Philadelphia International Airport – Hartsfield Jackson Atlanta International Airport | 1,072 | 12.9 min | 68.8% | 32 |
| CLT DTW Charlotte Douglas International Airport – Detroit Metropolitan Wayne County Airport | 806 | -3.1 min | 96.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 26 | 26 | 80.8% | 0 |
| December 2024 | 29 | 29 | 82.8% | 0 |
| January 2025 | 31 | 31 | 90.3% | 0 |
| February 2025 | 28 | 28 | 96.4% | 0 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 29 | 96.6% | 1 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 31 | 96.8% | 0 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 12 | 12 | 75.0% | 0 |
| January 2026 | 31 | 31 | 93.6% | 0 |
| February 2026 | 28 | 28 | 92.9% | 0 |
| March 2026 | 31 | 30 | 100.0% | 1 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 31 | 31 | 100.0% | 0 |
| June 2026 | 20 | 20 | 95.0% | 0 |
| July 2026 | 29 | 29 | 89.7% | 0 |