DL839
DL839 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Dallas-Fort Worth. Of 1,278 departures recorded from October 2024 to July 2026, 85.1% left on time, according to the US BTS.
- On-time departures85.1%of 1,278 flights
- Average delay7.3 min
- July 202655▼ 11.3%vs July 2025
- Cancelled2.2%
- Legs flown under this number2
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 | 62 | 62 | 0.0% |
| February | 56 | 48 | ▼ 14.3% |
| March | 62 | 54 | ▼ 12.9% |
| April | 60 | 56 | ▼ 6.7% |
| May | 62 | 62 | 0.0% |
| June | 60 | 53 | ▼ 11.7% |
| July | 62 | 55 | ▼ 11.3% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 62 | – | – |
| Year to date (Jan–Jul) | 424 | 390 | ▼ 8.0% |
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 | 79.7% | 87.5% | ▲ 9.8% |
| February | 87.5% | 93.8% | ▲ 7.1% |
| March | 80.7% | 90.4% | ▲ 12.1% |
| April | 73.3% | 89.3% | ▲ 21.8% |
| May | 79.0% | 77.6% | ▼ 1.8% |
| June | 78.3% | 87.8% | ▲ 12.0% |
| July | 91.4% | 92.7% | ▲ 1.5% |
| August | 93.6% | – | – |
| September | 83.3% | – | – |
| October | 87.1% | – | in progress |
| November | 78.6% | – | – |
| December | 86.9% | – | – |
| Year-to-date average (Jan–Jul) | 81.4% | 88.4% | ▲ 8.6% |
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 | 3 | 6 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 4 | – |
| June | 0 | 4 | – |
| July | 4 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 7 | 16 | ▲ 128.6% |
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 97.8% 1,250
- Cancelled 2.2% 28
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL DFW Hartsfield Jackson Atlanta International Airport – Dallas Fort Worth International Airport | 1,175 | 1.7 min | 92.2% | 642 |
| DFW ATL Dallas Fort Worth International Airport – Hartsfield Jackson Atlanta International Airport | 1,175 | 12.9 min | 78.0% | 636 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 85.0% | 0 |
| November 2024 | 56 | 56 | 89.3% | 0 |
| December 2024 | 62 | 62 | 83.9% | 0 |
| January 2025 | 62 | 59 | 79.7% | 3 |
| February 2025 | 56 | 56 | 87.5% | 0 |
| March 2025 | 62 | 62 | 80.7% | 0 |
| April 2025 | 60 | 60 | 73.3% | 0 |
| May 2025 | 62 | 62 | 79.0% | 0 |
| June 2025 | 60 | 60 | 78.3% | 0 |
| July 2025 | 62 | 58 | 91.4% | 4 |
| August 2025 | 62 | 62 | 93.6% | 0 |
| September 2025 | 60 | 60 | 83.3% | 0 |
| October 2025 | 62 | 62 | 87.1% | 0 |
| November 2025 | 60 | 56 | 78.6% | 4 |
| December 2025 | 62 | 61 | 86.9% | 1 |
| January 2026 | 62 | 56 | 87.5% | 6 |
| February 2026 | 48 | 48 | 93.8% | 0 |
| March 2026 | 54 | 52 | 90.4% | 2 |
| April 2026 | 56 | 56 | 89.3% | 0 |
| May 2026 | 62 | 58 | 77.6% | 4 |
| June 2026 | 53 | 49 | 87.8% | 4 |
| July 2026 | 55 | 55 | 92.7% | 0 |