DL1151
DL1151 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Milwaukee. Of 1,078 departures recorded from October 2024 to July 2026, 89.5% left on time, according to the US BTS.
- On-time departures89.5%of 1,078 flights
- Average delay1.9 min
- July 202662▲ 0.0%vs July 2025
- Cancelled1.4%
- 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 | 62 | 46 | ▼ 25.8% |
| February | 56 | 44 | ▼ 21.4% |
| March | 62 | 48 | ▼ 22.6% |
| April | 43 | 35 | ▼ 18.6% |
| May | 31 | 56 | ▲ 80.6% |
| June | 53 | 60 | ▲ 13.2% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 50 | – | – |
| October | 62 | – | in progress |
| November | 56 | – | – |
| December | 54 | – | – |
| Year to date (Jan–Jul) | 369 | 351 | ▼ 4.9% |
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 | 91.4% | 84.1% | ▼ 8.0% |
| February | 98.2% | 93.2% | ▼ 5.1% |
| March | 87.1% | 82.2% | ▼ 5.6% |
| April | 93.0% | 85.3% | ▼ 8.3% |
| May | 90.3% | 90.9% | ▲ 0.7% |
| June | 88.2% | 90.0% | ▲ 2.0% |
| July | 95.2% | 76.7% | ▼ 19.4% |
| August | 95.2% | – | – |
| September | 92.0% | – | – |
| October | 93.6% | – | in progress |
| November | 91.1% | – | – |
| December | 79.6% | – | – |
| Year-to-date average (Jan–Jul) | 91.9% | 86.1% | ▼ 6.4% |
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 | 4 | 2 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 3 | – |
| April | 0 | 1 | – |
| May | 0 | 1 | – |
| 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) | 6 | 9 | ▲ 50.0% |
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 98.6% 1,063
- Cancelled 1.4% 15
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL MKE Hartsfield Jackson Atlanta International Airport – General Mitchell International Airport | 1,078 | 1.0 min | 90.7% | 613 |
| MKE ATL General Mitchell International Airport – Hartsfield Jackson Atlanta International Airport | 1,078 | 3.0 min | 87.8% | 465 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 100.0% | 0 |
| November 2024 | 17 | 17 | 88.2% | 0 |
| December 2024 | 43 | 43 | 86.1% | 0 |
| January 2025 | 62 | 58 | 91.4% | 4 |
| February 2025 | 56 | 56 | 98.2% | 0 |
| March 2025 | 62 | 62 | 87.1% | 0 |
| April 2025 | 43 | 43 | 93.0% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 53 | 51 | 88.2% | 2 |
| July 2025 | 62 | 62 | 95.2% | 0 |
| August 2025 | 62 | 62 | 95.2% | 0 |
| September 2025 | 50 | 50 | 92.0% | 0 |
| October 2025 | 62 | 62 | 93.6% | 0 |
| November 2025 | 56 | 56 | 91.1% | 0 |
| December 2025 | 54 | 54 | 79.6% | 0 |
| January 2026 | 46 | 44 | 84.1% | 2 |
| February 2026 | 44 | 44 | 93.2% | 0 |
| March 2026 | 48 | 45 | 82.2% | 3 |
| April 2026 | 35 | 34 | 85.3% | 1 |
| May 2026 | 56 | 55 | 90.9% | 1 |
| June 2026 | 60 | 60 | 90.0% | 0 |
| July 2026 | 62 | 60 | 76.7% | 2 |