DL643
DL643 (Delta Air Lines) is a multi-stop service on 14 routes, busiest Hartford to Atlanta. Of 364 departures recorded from October 2024 to July 2026, 82.8% left on time, according to the US BTS.
- On-time departures82.8%of 364 flights
- Average delay5.3 min
- July 20262▲ 100.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 23 | – |
| February | – | 10 | – |
| March | 14 | 24 | ▲ 71.4% |
| April | 16 | 12 | ▼ 25.0% |
| May | 44 | 20 | ▼ 54.5% |
| June | 12 | 5 | ▼ 58.3% |
| July | 1 | 2 | ▲ 100.0% |
| August | 17 | – | – |
| September | 26 | – | – |
| October | 30 | – | in progress |
| November | 8 | – | – |
| December | 32 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 68.2% | – |
| February | – | 80.0% | – |
| March | 85.7% | 91.3% | ▲ 6.5% |
| April | 100.0% | 100.0% | 0.0% |
| May | 100.0% | 55.0% | ▼ 45.0% |
| June | 83.3% | 100.0% | ▲ 20.0% |
| July | 100.0% | 100.0% | 0.0% |
| August | 70.6% | – | – |
| September | 80.8% | – | – |
| October | 73.3% | – | in progress |
| November | 42.9% | – | – |
| December | 78.1% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 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 99.2% 361
- Cancelled 0.8% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 4, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BDL ATL Bradley International Airport – Hartsfield Jackson Atlanta International Airport | 1,382 | 10.4 min | 72.5% | 81 |
| ATL FAY Hartsfield Jackson Atlanta International Airport – Fayetteville Regional Airport - Grannis Field | 531 | -0.2 min | 89.5% | 38 |
| MSP LAS Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Harry Reid International Airport | 2,088 | -0.8 min | 94.3% | 36 |
| SAN ATL San Diego International Airport – Hartsfield Jackson Atlanta International Airport | 3,038 | 1.3 min | 94.1% | 34 |
| SNA SLC John Wayne Orange County International Airport – Salt Lake City International Airport | 947 | 11.9 min | 71.9% | 33 |
| FLL DTW Fort Lauderdale Hollywood International Airport – Detroit Metropolitan Wayne County Airport | 1,819 | 1.9 min | 83.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 18 | 18 | 88.9% | 0 |
| March 2025 | 14 | 14 | 85.7% | 0 |
| April 2025 | 16 | 16 | 100.0% | 0 |
| May 2025 | 44 | 44 | 100.0% | 0 |
| June 2025 | 12 | 12 | 83.3% | 0 |
| July 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 17 | 17 | 70.6% | 0 |
| September 2025 | 26 | 26 | 80.8% | 0 |
| October 2025 | 30 | 30 | 73.3% | 0 |
| November 2025 | 8 | 7 | 42.9% | 1 |
| December 2025 | 32 | 32 | 78.1% | 0 |
| January 2026 | 23 | 22 | 68.2% | 1 |
| February 2026 | 10 | 10 | 80.0% | 0 |
| March 2026 | 24 | 23 | 91.3% | 1 |
| April 2026 | 12 | 12 | 100.0% | 0 |
| May 2026 | 20 | 20 | 55.0% | 0 |
| June 2026 | 5 | 5 | 100.0% | 0 |
| July 2026 | 2 | 2 | 100.0% | 0 |