DL1255
DL1255 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Harrisburg to Atlanta. Of 639 departures recorded from October 2024 to July 2026, 93.3% left on time, according to the US BTS.
- On-time departures93.3%of 639 flights
- Average delay2.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.2%
- 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 | 26 | 30 | ▲ 15.4% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 207 | 211 | ▲ 1.9% |
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 | 92.0% | 92.9% | ▲ 0.9% |
| February | 85.7% | 100.0% | ▲ 16.7% |
| March | 96.8% | 90.3% | ▼ 6.7% |
| April | 86.7% | 96.6% | ▲ 11.4% |
| May | 93.3% | 96.6% | ▲ 3.5% |
| June | 93.1% | 93.3% | ▲ 0.2% |
| July | 100.0% | 96.6% | ▼ 3.5% |
| August | 100.0% | – | – |
| September | 93.3% | – | – |
| October | 83.9% | – | in progress |
| November | 93.3% | – | – |
| December | 92.9% | – | – |
| Year-to-date average (Jan–Jul) | 92.5% | 95.2% | ▲ 2.9% |
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 | 2 | ▲ 100.0% |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 1 | – |
| May | 1 | 2 | ▲ 100.0% |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 9 | ▲ 200.0% |
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 97.8% 625
- Cancelled 2.2% 14
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDT ATL Harrisburg International Airport – Hartsfield Jackson Atlanta International Airport | 997 | 2.6 min | 93.6% | 627 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 21 | 21 | 90.5% | 0 |
| January 2025 | 26 | 25 | 92.0% | 1 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 30 | 93.3% | 1 |
| June 2025 | 30 | 29 | 93.1% | 1 |
| July 2025 | 31 | 31 | 100.0% | 0 |
| August 2025 | 31 | 29 | 100.0% | 2 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 30 | 30 | 93.3% | 0 |
| December 2025 | 28 | 28 | 92.9% | 0 |
| January 2026 | 30 | 28 | 92.9% | 2 |
| February 2026 | 28 | 26 | 100.0% | 2 |
| March 2026 | 31 | 31 | 90.3% | 0 |
| April 2026 | 30 | 29 | 96.6% | 1 |
| May 2026 | 31 | 29 | 96.6% | 2 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 31 | 29 | 96.6% | 2 |