DL1571
DL1571 (Delta Air Lines) is a multi-stop service on 3 routes, busiest Atlanta to St Louis. Of 1,151 departures recorded from October 2024 to July 2026, 92.9% left on time, according to the US BTS.
- On-time departures92.9%of 1,151 flights
- Average delay-0.1 min
- July 202648▼ 14.3%vs July 2025
- Cancelled2.1%
- 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 | 60 | 62 | ▲ 3.3% |
| February | 56 | 56 | 0.0% |
| March | 59 | 62 | ▲ 5.1% |
| April | 26 | 60 | ▲ 130.8% |
| May | 51 | 62 | ▲ 21.6% |
| June | 56 | 48 | ▼ 14.3% |
| July | 56 | 48 | ▼ 14.3% |
| August | 50 | – | – |
| September | 39 | – | – |
| October | 47 | – | in progress |
| November | 34 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 364 | 398 | ▲ 9.3% |
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 | 82.1% | 96.6% | ▲ 17.5% |
| February | 89.3% | 94.4% | ▲ 5.8% |
| March | 91.5% | 91.7% | ▲ 0.2% |
| April | 84.6% | 89.3% | ▲ 5.5% |
| May | 94.1% | 95.2% | ▲ 1.1% |
| June | 87.0% | 95.8% | ▲ 10.1% |
| July | 100.0% | 97.9% | ▼ 2.1% |
| August | 96.0% | – | – |
| September | 94.9% | – | – |
| October | 83.0% | – | in progress |
| November | 96.4% | – | – |
| December | 91.4% | – | – |
| Year-to-date average (Jan–Jul) | 89.8% | 94.4% | ▲ 5.1% |
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 | 4 | 0.0% |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 4 | – |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 6 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 6 | 12 | ▲ 100.0% |
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 97.9% 1,127
- Cancelled 2.1% 24
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 STL Hartsfield Jackson Atlanta International Airport – St. Louis Lambert International Airport | 779 | 0.0 min | 92.4% | 578 |
| STL ATL St. Louis Lambert International Airport – Hartsfield Jackson Atlanta International Airport | 779 | -0.0 min | 93.4% | 570 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 100.0% | 0 |
| November 2024 | 59 | 59 | 93.2% | 0 |
| December 2024 | 62 | 62 | 98.4% | 0 |
| January 2025 | 60 | 56 | 82.1% | 4 |
| February 2025 | 56 | 56 | 89.3% | 0 |
| March 2025 | 59 | 59 | 91.5% | 0 |
| April 2025 | 26 | 26 | 84.6% | 0 |
| May 2025 | 51 | 51 | 94.1% | 0 |
| June 2025 | 56 | 54 | 87.0% | 2 |
| July 2025 | 56 | 56 | 100.0% | 0 |
| August 2025 | 50 | 50 | 96.0% | 0 |
| September 2025 | 39 | 39 | 94.9% | 0 |
| October 2025 | 47 | 47 | 83.0% | 0 |
| November 2025 | 34 | 28 | 96.4% | 6 |
| December 2025 | 58 | 58 | 91.4% | 0 |
| January 2026 | 62 | 58 | 96.6% | 4 |
| February 2026 | 56 | 54 | 94.4% | 2 |
| March 2026 | 62 | 60 | 91.7% | 2 |
| April 2026 | 60 | 56 | 89.3% | 4 |
| May 2026 | 62 | 62 | 95.2% | 0 |
| June 2026 | 48 | 48 | 95.8% | 0 |
| July 2026 | 48 | 48 | 97.9% | 0 |