DL1206
DL1206 (Delta Air Lines) is a multi-stop service on 3 routes, busiest Atlanta to Milwaukee. Of 637 departures recorded from October 2024 to July 2026, 77.1% left on time, according to the US BTS.
- On-time departures77.1%of 637 flights
- Average delay11.1 min
- July 202661▲ 96.8%vs July 2025
- Cancelled1.4%
- Legs flown under this number3
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 | 23 | 31 | ▲ 34.8% |
| February | 28 | 28 | 0.0% |
| March | 31 | 7 | ▼ 77.4% |
| April | 30 | 18 | ▼ 40.0% |
| May | 31 | 39 | ▲ 25.8% |
| June | 30 | 55 | ▲ 83.3% |
| July | 31 | 61 | ▲ 96.8% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 204 | 239 | ▲ 17.2% |
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 | 66.7% | 76.7% | ▲ 15.0% |
| February | 85.7% | 78.6% | ▼ 8.3% |
| March | 71.0% | 66.7% | ▼ 6.1% |
| April | 76.7% | 77.8% | ▲ 1.4% |
| May | 87.1% | 71.8% | ▼ 17.6% |
| June | 67.9% | 81.8% | ▲ 20.6% |
| July | 74.2% | 62.7% | ▼ 15.5% |
| August | 64.5% | – | – |
| September | 86.7% | – | – |
| October | 83.9% | – | in progress |
| November | 82.1% | – | – |
| December | 83.9% | – | – |
| Year-to-date average (Jan–Jul) | 75.6% | 73.7% | ▼ 2.5% |
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 | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 4 | 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 98.6% 628
- Cancelled 1.4% 9
Share of all recorded flights in the period, all legs. · Oct 13, 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 | 9.8 min | 78.8% | 555 |
| MKE ATL General Mitchell International Airport – Hartsfield Jackson Atlanta International Airport | 1,078 | 22.1 min | 63.4% | 72 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 87.5% | 0 |
| November 2024 | 13 | 13 | 84.6% | 0 |
| December 2024 | 21 | 21 | 95.2% | 0 |
| January 2025 | 23 | 21 | 66.7% | 2 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 31 | 31 | 71.0% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 30 | 28 | 67.9% | 2 |
| July 2025 | 31 | 31 | 74.2% | 0 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 29 | 28 | 82.1% | 1 |
| December 2025 | 31 | 31 | 83.9% | 0 |
| January 2026 | 31 | 30 | 76.7% | 1 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 7 | 6 | 66.7% | 1 |
| April 2026 | 18 | 18 | 77.8% | 0 |
| May 2026 | 39 | 39 | 71.8% | 0 |
| June 2026 | 55 | 55 | 81.8% | 0 |
| July 2026 | 61 | 59 | 62.7% | 2 |