DL1235
DL1235 (Delta Air Lines) is a multi-stop service on 14 routes, busiest Atlanta to Phoenix. Of 664 departures recorded from October 2024 to July 2026, 77.4% left on time, according to the US BTS.
- On-time departures77.4%of 664 flights
- Average delay11.7 min
- July 202644▲ 69.2%vs July 2025
- Cancelled2.0%
- Legs flown under this number14
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 6 | 14 | ▲ 133.3% |
| February | 8 | 41 | ▲ 412.5% |
| March | 22 | 56 | ▲ 154.5% |
| April | 13 | 52 | ▲ 300.0% |
| May | 26 | 54 | ▲ 107.7% |
| June | 27 | 44 | ▲ 63.0% |
| July | 26 | 44 | ▲ 69.2% |
| August | 29 | – | – |
| September | 25 | – | – |
| October | 30 | – | in progress |
| November | 27 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 128 | 305 | ▲ 138.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 83.3% | 92.9% | ▲ 11.4% |
| February | 87.5% | 80.5% | ▼ 8.0% |
| March | 72.7% | 81.5% | ▲ 12.0% |
| April | 83.3% | 80.0% | ▼ 4.0% |
| May | 73.1% | 68.5% | ▼ 6.2% |
| June | 66.7% | 82.9% | ▲ 24.4% |
| July | 53.9% | 55.0% | ▲ 2.1% |
| August | 75.9% | – | – |
| September | 88.0% | – | – |
| October | 86.7% | – | in progress |
| November | 85.2% | – | – |
| December | 80.8% | – | – |
| Year-to-date average (Jan–Jul) | 74.4% | 77.3% | ▲ 4.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 1 | 2 | ▲ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 3 | – |
| July | 0 | 4 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 1 | 11 | ▲ 1,000.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.0% 651
- Cancelled 2.0% 13
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL PHX Hartsfield Jackson Atlanta International Airport – Phoenix Sky Harbor International Airport | 2,549 | 13.6 min | 77.3% | 176 |
| ATL LEX Hartsfield Jackson Atlanta International Airport – Blue Grass Airport | 489 | 13.2 min | 75.4% | 131 |
| LEX ATL Blue Grass Airport – Hartsfield Jackson Atlanta International Airport | 489 | 6.6 min | 75.8% | 105 |
| ATL BWI Hartsfield Jackson Atlanta International Airport – Baltimore/Washington International Thurgood Marshall Airport | 928 | 3.1 min | 86.8% | 68 |
| RDU ATL Raleigh-Durham International Airport – Hartsfield Jackson Atlanta International Airport | 572 | 19.1 min | 80.5% | 41 |
| MCO ATL Orlando International Airport – Hartsfield Jackson Atlanta International Airport | 651 | 27.6 min | 68.8% | 32 |
| ATL BHM Hartsfield Jackson Atlanta International Airport – Birmingham-Shuttlesworth International Airport | 215 | 15.4 min | 73.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 28 | 28 | 82.1% | 0 |
| November 2024 | 37 | 37 | 75.7% | 0 |
| December 2024 | 28 | 28 | 96.4% | 0 |
| January 2025 | 6 | 6 | 83.3% | 0 |
| February 2025 | 8 | 8 | 87.5% | 0 |
| March 2025 | 22 | 22 | 72.7% | 0 |
| April 2025 | 13 | 12 | 83.3% | 1 |
| May 2025 | 26 | 26 | 73.1% | 0 |
| June 2025 | 27 | 27 | 66.7% | 0 |
| July 2025 | 26 | 26 | 53.9% | 0 |
| August 2025 | 29 | 29 | 75.9% | 0 |
| September 2025 | 25 | 25 | 88.0% | 0 |
| October 2025 | 30 | 30 | 86.7% | 0 |
| November 2025 | 27 | 27 | 85.2% | 0 |
| December 2025 | 27 | 26 | 80.8% | 1 |
| January 2026 | 14 | 14 | 92.9% | 0 |
| February 2026 | 41 | 41 | 80.5% | 0 |
| March 2026 | 56 | 54 | 81.5% | 2 |
| April 2026 | 52 | 50 | 80.0% | 2 |
| May 2026 | 54 | 54 | 68.5% | 0 |
| June 2026 | 44 | 41 | 82.9% | 3 |
| July 2026 | 44 | 40 | 55.0% | 4 |