DL2451
DL2451 (Delta Air Lines) is a multi-stop service on 10 routes, busiest Atlanta to Louisville. Of 799 departures recorded from October 2024 to July 2026, 86.6% left on time, according to the US BTS.
- On-time departures86.6%of 799 flights
- Average delay4.3 min
- July 202631▼ 50.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number10
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 | 31 | 3 | ▼ 90.3% |
| February | 28 | 6 | ▼ 78.6% |
| March | 31 | 26 | ▼ 16.1% |
| April | 28 | 30 | ▲ 7.1% |
| May | 17 | 31 | ▲ 82.4% |
| June | 48 | 30 | ▼ 37.5% |
| July | 62 | 31 | ▼ 50.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 60 | – | in progress |
| November | 60 | – | – |
| December | 50 | – | – |
| Year to date (Jan–Jul) | 245 | 157 | ▼ 35.9% |
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 | 93.6% | 66.7% | ▼ 28.7% |
| February | 89.3% | 100.0% | ▲ 12.0% |
| March | 77.4% | 88.0% | ▲ 13.7% |
| April | 77.8% | 83.3% | ▲ 7.1% |
| May | 58.8% | 93.6% | ▲ 59.0% |
| June | 80.4% | 96.7% | ▲ 20.2% |
| July | 85.5% | 86.2% | ▲ 0.9% |
| August | 87.1% | – | – |
| September | 96.7% | – | – |
| October | 88.3% | – | in progress |
| November | 91.7% | – | – |
| December | 84.0% | – | – |
| Year-to-date average (Jan–Jul) | 80.4% | 87.8% | ▲ 9.2% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 3 | 0.0% |
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 99.1% 792
- Cancelled 0.9% 7
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SDF ATL Louisville Muhammad Ali International Airport – Hartsfield Jackson Atlanta International Airport | 518 | 5.0 min | 88.6% | 194 |
| ATL SDF Hartsfield Jackson Atlanta International Airport – Louisville Muhammad Ali International Airport | 518 | 2.0 min | 89.6% | 194 |
| DTW GRR Detroit Metropolitan Wayne County Airport – Gerald R. Ford International Airport | 193 | 8.8 min | 81.0% | 169 |
| VPS ATL Destin-Fort Walton Beach Airport – Hartsfield Jackson Atlanta International Airport | 402 | 1.9 min | 89.5% | 146 |
| SAV ATL Savannah Hilton Head International Airport – Hartsfield Jackson Atlanta International Airport | 345 | 1.7 min | 86.2% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 33 | 87.9% | 1 |
| November 2024 | 40 | 40 | 92.5% | 0 |
| December 2024 | 31 | 31 | 67.7% | 0 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 31 | 31 | 77.4% | 0 |
| April 2025 | 28 | 27 | 77.8% | 1 |
| May 2025 | 17 | 17 | 58.8% | 0 |
| June 2025 | 48 | 46 | 80.4% | 2 |
| July 2025 | 62 | 62 | 85.5% | 0 |
| August 2025 | 62 | 62 | 87.1% | 0 |
| September 2025 | 60 | 60 | 96.7% | 0 |
| October 2025 | 60 | 60 | 88.3% | 0 |
| November 2025 | 60 | 60 | 91.7% | 0 |
| December 2025 | 50 | 50 | 84.0% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| February 2026 | 6 | 6 | 100.0% | 0 |
| March 2026 | 26 | 25 | 88.0% | 1 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 30 | 96.7% | 0 |
| July 2026 | 31 | 29 | 86.2% | 2 |