DL850
DL850 (Delta Air Lines) is a multi-stop service on 3 routes, busiest Atlanta to Washington. Of 1,154 departures recorded from October 2024 to July 2026, 59.2% left on time, according to the US BTS.
- On-time departures59.2%of 1,154 flights
- Average delay29.9 min
- July 202660▼ 3.2%vs July 2025
- Cancelled1.9%
- Legs flown under this number3
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 | 53 | 56 | ▲ 5.7% |
| February | 56 | 56 | 0.0% |
| March | 39 | 62 | ▲ 59.0% |
| April | 47 | 60 | ▲ 27.7% |
| May | 62 | 62 | 0.0% |
| June | 59 | 60 | ▲ 1.7% |
| July | 62 | 60 | ▼ 3.2% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 59 | – | – |
| December | 47 | – | – |
| Year to date (Jan–Jul) | 378 | 416 | ▲ 10.1% |
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 | 56.9% | 58.5% | ▲ 2.9% |
| February | 42.9% | 66.1% | ▲ 54.2% |
| March | 53.9% | 53.2% | ▼ 1.2% |
| April | 72.3% | 65.0% | ▼ 10.1% |
| May | 56.5% | 70.0% | ▲ 24.0% |
| June | 39.3% | 57.9% | ▲ 47.3% |
| July | 37.3% | 39.7% | ▲ 6.4% |
| August | 68.9% | – | – |
| September | 71.7% | – | – |
| October | 67.7% | – | in progress |
| November | 53.5% | – | – |
| December | 68.9% | – | – |
| Year-to-date average (Jan–Jul) | 51.3% | 58.6% | ▲ 14.3% |
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 | 3 | ▲ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 2 | – |
| June | 3 | 3 | 0.0% |
| July | 3 | 2 | ▼ 33.3% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 8 | 10 | ▲ 25.0% |
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 98.1% 1,132
- Cancelled 1.9% 22
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 DCA Hartsfield Jackson Atlanta International Airport – Ronald Reagan Washington National Airport | 880 | 22.6 min | 64.3% | 626 |
| DCA ATL Ronald Reagan Washington National Airport – Hartsfield Jackson Atlanta International Airport | 880 | 39.4 min | 52.2% | 517 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 20 | 20 | 80.0% | 0 |
| January 2025 | 53 | 51 | 56.9% | 2 |
| February 2025 | 56 | 56 | 42.9% | 0 |
| March 2025 | 39 | 39 | 53.9% | 0 |
| April 2025 | 47 | 47 | 72.3% | 0 |
| May 2025 | 62 | 62 | 56.5% | 0 |
| June 2025 | 59 | 56 | 39.3% | 3 |
| July 2025 | 62 | 59 | 37.3% | 3 |
| August 2025 | 62 | 61 | 68.9% | 1 |
| September 2025 | 60 | 60 | 71.7% | 0 |
| October 2025 | 62 | 62 | 67.7% | 0 |
| November 2025 | 59 | 58 | 53.5% | 1 |
| December 2025 | 47 | 45 | 68.9% | 2 |
| January 2026 | 56 | 53 | 58.5% | 3 |
| February 2026 | 56 | 56 | 66.1% | 0 |
| March 2026 | 62 | 62 | 53.2% | 0 |
| April 2026 | 60 | 60 | 65.0% | 0 |
| May 2026 | 62 | 60 | 70.0% | 2 |
| June 2026 | 60 | 57 | 57.9% | 3 |
| July 2026 | 60 | 58 | 39.7% | 2 |