DL1585
DL1585 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Houston. Of 1,173 departures recorded from October 2024 to July 2026, 85.1% left on time, according to the US BTS.
- On-time departures85.1%of 1,173 flights
- Average delay7.1 min
- July 202660▲ 7.1%vs July 2025
- Cancelled2.9%
- 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 | 54 | 60 | ▲ 11.1% |
| February | 56 | 50 | ▼ 10.7% |
| March | 62 | 60 | ▼ 3.2% |
| April | 60 | 60 | 0.0% |
| May | 62 | 62 | 0.0% |
| June | 60 | 60 | 0.0% |
| July | 56 | 60 | ▲ 7.1% |
| August | 48 | – | – |
| September | 37 | – | – |
| October | 50 | – | in progress |
| November | 46 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 410 | 412 | ▲ 0.5% |
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 | 84.0% | 87.3% | ▲ 3.9% |
| February | 85.7% | 94.0% | ▲ 9.7% |
| March | 90.3% | 80.4% | ▼ 11.0% |
| April | 91.4% | 84.5% | ▼ 7.6% |
| May | 80.7% | 74.2% | ▼ 8.0% |
| June | 88.3% | 81.4% | ▼ 7.9% |
| July | 85.7% | 83.3% | ▼ 2.8% |
| August | 85.4% | – | – |
| September | 81.1% | – | – |
| October | 85.4% | – | in progress |
| November | 77.5% | – | – |
| December | 76.8% | – | – |
| Year-to-date average (Jan–Jul) | 86.6% | 83.6% | ▼ 3.5% |
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 | 4 | 5 | ▲ 25.0% |
| February | 0 | 0 | – |
| March | 0 | 4 | – |
| April | 2 | 2 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 6 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 6 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 6 | 18 | ▲ 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 97.1% 1,139
- Cancelled 2.9% 34
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 IAH Hartsfield Jackson Atlanta International Airport – George Bush Intercontinental Airport | 1,108 | 1.8 min | 91.6% | 613 |
| IAH ATL George Bush Intercontinental Airport – Hartsfield Jackson Atlanta International Airport | 1,108 | 13.0 min | 77.9% | 560 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 34 | 97.1% | 0 |
| November 2024 | 34 | 34 | 97.1% | 0 |
| December 2024 | 44 | 44 | 88.6% | 0 |
| January 2025 | 54 | 50 | 84.0% | 4 |
| February 2025 | 56 | 56 | 85.7% | 0 |
| March 2025 | 62 | 62 | 90.3% | 0 |
| April 2025 | 60 | 58 | 91.4% | 2 |
| May 2025 | 62 | 62 | 80.7% | 0 |
| June 2025 | 60 | 60 | 88.3% | 0 |
| July 2025 | 56 | 56 | 85.7% | 0 |
| August 2025 | 48 | 48 | 85.4% | 0 |
| September 2025 | 37 | 37 | 81.1% | 0 |
| October 2025 | 50 | 48 | 85.4% | 2 |
| November 2025 | 46 | 40 | 77.5% | 6 |
| December 2025 | 58 | 56 | 76.8% | 2 |
| January 2026 | 60 | 55 | 87.3% | 5 |
| February 2026 | 50 | 50 | 94.0% | 0 |
| March 2026 | 60 | 56 | 80.4% | 4 |
| April 2026 | 60 | 58 | 84.5% | 2 |
| May 2026 | 62 | 62 | 74.2% | 0 |
| June 2026 | 60 | 59 | 81.4% | 1 |
| July 2026 | 60 | 54 | 83.3% | 6 |