DL1309
DL1309 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Dulles. Of 519 departures recorded from October 2024 to July 2026, 78.0% left on time, according to the US BTS.
- On-time departures78.0%of 519 flights
- Average delay13.4 min
- July 202626▲ 73.3%vs July 2025
- Cancelled1.9%
- 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 | 30 | 24 | ▼ 20.0% |
| February | 28 | 36 | ▲ 28.6% |
| March | 22 | 33 | ▲ 50.0% |
| April | 16 | 26 | ▲ 62.5% |
| May | 29 | 26 | ▼ 10.3% |
| June | 19 | 24 | ▲ 26.3% |
| July | 15 | 26 | ▲ 73.3% |
| August | 14 | – | – |
| September | 13 | – | – |
| October | 29 | – | in progress |
| November | 30 | – | – |
| December | 22 | – | – |
| Year to date (Jan–Jul) | 159 | 195 | ▲ 22.6% |
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 | 86.2% | 90.5% | ▲ 5.0% |
| February | 82.1% | 88.9% | ▲ 8.2% |
| March | 68.2% | 75.8% | ▲ 11.1% |
| April | 56.3% | 76.9% | ▲ 36.7% |
| May | 89.7% | 65.4% | ▼ 27.1% |
| June | 61.1% | 65.2% | ▲ 6.7% |
| July | 42.9% | 56.0% | ▲ 30.7% |
| August | 69.2% | – | – |
| September | 100.0% | – | – |
| October | 93.1% | – | in progress |
| November | 86.2% | – | – |
| December | 77.3% | – | – |
| Year-to-date average (Jan–Jul) | 69.5% | 74.1% | ▲ 6.6% |
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 | 1 | 3 | ▲ 200.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 1 | 0.0% |
| July | 1 | 1 | 0.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 5 | ▲ 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 98.1% 509
- Cancelled 1.9% 10
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 IAD Hartsfield Jackson Atlanta International Airport – Washington Dulles International Airport | 859 | 13.1 min | 77.5% | 494 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 100.0% | 0 |
| November 2024 | 18 | 18 | 88.9% | 0 |
| December 2024 | 31 | 31 | 80.7% | 0 |
| January 2025 | 30 | 29 | 86.2% | 1 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 22 | 22 | 68.2% | 0 |
| April 2025 | 16 | 16 | 56.3% | 0 |
| May 2025 | 29 | 29 | 89.7% | 0 |
| June 2025 | 19 | 18 | 61.1% | 1 |
| July 2025 | 15 | 14 | 42.9% | 1 |
| August 2025 | 14 | 13 | 69.2% | 1 |
| September 2025 | 13 | 13 | 100.0% | 0 |
| October 2025 | 29 | 29 | 93.1% | 0 |
| November 2025 | 30 | 29 | 86.2% | 1 |
| December 2025 | 22 | 22 | 77.3% | 0 |
| January 2026 | 24 | 21 | 90.5% | 3 |
| February 2026 | 36 | 36 | 88.9% | 0 |
| March 2026 | 33 | 33 | 75.8% | 0 |
| April 2026 | 26 | 26 | 76.9% | 0 |
| May 2026 | 26 | 26 | 65.4% | 0 |
| June 2026 | 24 | 23 | 65.2% | 1 |
| July 2026 | 26 | 25 | 56.0% | 1 |