DL378
DL378 (Delta Air Lines) is a multi-stop service on 4 routes, busiest Atlanta to Washington. Of 512 departures recorded from October 2024 to July 2026, 64.1% left on time, according to the US BTS.
- On-time departures64.1%of 512 flights
- Average delay24.0 min
- July 202627▲ 8.0%vs July 2025
- Cancelled2.7%
- Legs flown under this number4
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 | 28 | 21 | ▼ 25.0% |
| February | 26 | 20 | ▼ 23.1% |
| March | 27 | 22 | ▼ 18.5% |
| April | 25 | 22 | ▼ 12.0% |
| May | 29 | 22 | ▼ 24.1% |
| June | 27 | 27 | 0.0% |
| July | 25 | 27 | ▲ 8.0% |
| August | 27 | – | – |
| September | 22 | – | – |
| October | 22 | – | in progress |
| November | 20 | – | – |
| December | 13 | – | – |
| Year to date (Jan–Jul) | 187 | 161 | ▼ 13.9% |
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 | 84.0% | 70.0% | ▼ 16.7% |
| February | 34.6% | 68.4% | ▲ 97.6% |
| March | 42.3% | 59.1% | ▲ 39.7% |
| April | 75.0% | 90.5% | ▲ 20.6% |
| May | 37.9% | 63.6% | ▲ 67.8% |
| June | 48.0% | 76.9% | ▲ 60.3% |
| July | 30.4% | 44.4% | ▲ 46.0% |
| August | 70.4% | – | – |
| September | 77.3% | – | – |
| October | 86.4% | – | in progress |
| November | 75.0% | – | – |
| December | 83.3% | – | – |
| Year-to-date average (Jan–Jul) | 50.3% | 67.6% | ▲ 34.3% |
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 | 3 | 1 | ▼ 66.7% |
| February | 0 | 1 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 2 | 1 | ▼ 50.0% |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 9 | 4 | ▼ 55.6% |
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 97.3% 498
- Cancelled 2.7% 14
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL DCA Hartsfield Jackson Atlanta International Airport – Ronald Reagan Washington National Airport | 880 | 24.2 min | 64.0% | 506 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 78.6% | 0 |
| November 2024 | 26 | 26 | 80.8% | 0 |
| December 2024 | 20 | 20 | 65.0% | 0 |
| January 2025 | 28 | 25 | 84.0% | 3 |
| February 2025 | 26 | 26 | 34.6% | 0 |
| March 2025 | 27 | 26 | 42.3% | 1 |
| April 2025 | 25 | 24 | 75.0% | 1 |
| May 2025 | 29 | 29 | 37.9% | 0 |
| June 2025 | 27 | 25 | 48.0% | 2 |
| July 2025 | 25 | 23 | 30.4% | 2 |
| August 2025 | 27 | 27 | 70.4% | 0 |
| September 2025 | 22 | 22 | 77.3% | 0 |
| October 2025 | 22 | 22 | 86.4% | 0 |
| November 2025 | 20 | 20 | 75.0% | 0 |
| December 2025 | 13 | 12 | 83.3% | 1 |
| January 2026 | 21 | 20 | 70.0% | 1 |
| February 2026 | 20 | 19 | 68.4% | 1 |
| March 2026 | 22 | 22 | 59.1% | 0 |
| April 2026 | 22 | 21 | 90.5% | 1 |
| May 2026 | 22 | 22 | 63.6% | 0 |
| June 2026 | 27 | 26 | 76.9% | 1 |
| July 2026 | 27 | 27 | 44.4% | 0 |