DL331
DL331 (Delta Air Lines) is a multi-stop service on 10 routes, busiest Atlanta to Los Angeles. Of 475 departures recorded from October 2024 to July 2026, 68.8% left on time, according to the US BTS.
- On-time departures68.8%of 475 flights
- Average delay23.6 min
- July 202615▼ 34.8%vs July 2025
- Cancelled2.3%
- 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 | 26 | 31 | ▲ 19.2% |
| February | 28 | 28 | 0.0% |
| March | 22 | 31 | ▲ 40.9% |
| April | 24 | 22 | ▼ 8.3% |
| May | 23 | 4 | ▼ 82.6% |
| June | 28 | 18 | ▼ 35.7% |
| July | 23 | 15 | ▼ 34.8% |
| August | 24 | – | – |
| September | 21 | – | – |
| October | 16 | – | in progress |
| November | 10 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 174 | 149 | ▼ 14.4% |
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 | 76.9% | 74.2% | ▼ 3.5% |
| February | 75.0% | 82.1% | ▲ 9.5% |
| March | 68.2% | 55.2% | ▼ 19.1% |
| April | 68.2% | 72.7% | ▲ 6.7% |
| May | 63.6% | 75.0% | ▲ 17.9% |
| June | 38.5% | 77.8% | ▲ 102.2% |
| July | 50.0% | 40.0% | ▼ 20.0% |
| August | 62.5% | – | – |
| September | 76.2% | – | – |
| October | 68.8% | – | in progress |
| November | 50.0% | – | – |
| December | 61.5% | – | – |
| Year-to-date average (Jan–Jul) | 62.9% | 68.1% | ▲ 8.3% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 2 | 0 | ▼ 100.0% |
| May | 1 | 0 | ▼ 100.0% |
| June | 2 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 6 | 2 | ▼ 66.7% |
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 97.7% 464
- Cancelled 2.3% 11
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 |
|---|---|---|---|---|
| ATL LAX Hartsfield Jackson Atlanta International Airport – Los Angeles International Airport | 3,126 | 24.6 min | 67.7% | 426 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 100.0% | 0 |
| November 2024 | 22 | 22 | 90.9% | 0 |
| December 2024 | 18 | 18 | 88.9% | 0 |
| January 2025 | 26 | 26 | 76.9% | 0 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 22 | 22 | 68.2% | 0 |
| April 2025 | 24 | 22 | 68.2% | 2 |
| May 2025 | 23 | 22 | 63.6% | 1 |
| June 2025 | 28 | 26 | 38.5% | 2 |
| July 2025 | 23 | 22 | 50.0% | 1 |
| August 2025 | 24 | 24 | 62.5% | 0 |
| September 2025 | 21 | 21 | 76.2% | 0 |
| October 2025 | 16 | 16 | 68.8% | 0 |
| November 2025 | 10 | 8 | 50.0% | 2 |
| December 2025 | 27 | 26 | 61.5% | 1 |
| January 2026 | 31 | 31 | 74.2% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 29 | 55.2% | 2 |
| April 2026 | 22 | 22 | 72.7% | 0 |
| May 2026 | 4 | 4 | 75.0% | 0 |
| June 2026 | 18 | 18 | 77.8% | 0 |
| July 2026 | 15 | 15 | 40.0% | 0 |