DL1751
DL1751 (Delta Air Lines) is a multi-stop service on 3 routes, busiest Atlanta to Dulles. Of 362 departures recorded from June 2025 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 362 flights
- Average delay10.3 min
- July 202630▼ 51.6%vs July 2025
- Cancelled1.1%
- Legs flown under this number3
Recorded departures by month
Short series — DL1751 has only 8 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods8 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 46 | 24 | ▼ 47.8% |
| July | 62 | 30 | ▼ 51.6% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 16 | – | – |
| December | – | – | – |
according to the US BTS · June 2025 → July 2026
On-time departures by month
Short series — DL1751 has only 8 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods8 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 93.2% | 73.9% | ▼ 20.7% |
| July | 77.4% | 31.0% | ▼ 59.9% |
| August | 82.3% | – | – |
| September | 90.0% | – | – |
| October | 79.0% | – | in progress |
| November | 93.8% | – | – |
| December | – | – | – |
according to the US BTS · June 2025 → July 2026
Average departure delay by month
Short series — DL1751 has only 8 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · June 2025 → July 2026
Cancelled departures by month
Short series — DL1751 has only 8 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods8 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 2 | 1 | ▼ 50.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
according to the US BTS · June 2025 → 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 98.9% 358
- Cancelled 1.1% 4
Share of all recorded flights in the period, all legs. · Jun 8, 2025 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAD ATL Washington Dulles International Airport – Hartsfield Jackson Atlanta International Airport | 859 | 6.9 min | 82.4% | 154 |
| ATL IAD Hartsfield Jackson Atlanta International Airport – Washington Dulles International Airport | 859 | 3.7 min | 86.3% | 154 |
| BUF MSP Buffalo Niagara International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,179 | 40.0 min | 50.0% | 54 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| June 2025 | 46 | 44 | 93.2% | 2 |
| July 2025 | 62 | 62 | 77.4% | 0 |
| August 2025 | 62 | 62 | 82.3% | 0 |
| September 2025 | 60 | 60 | 90.0% | 0 |
| October 2025 | 62 | 62 | 79.0% | 0 |
| November 2025 | 16 | 16 | 93.8% | 0 |
| June 2026 | 24 | 23 | 73.9% | 1 |
| July 2026 | 30 | 29 | 31.0% | 1 |