DL923
DL923 (Delta Air Lines) flies Boston to Atlanta. Of 609 departures recorded from October 2024 to July 2026, 86.9% left on time, according to the US BTS.
- On-time departures86.9%of 609 flights
- Average delay11.7 min
- July 202631▲ 19.2%vs July 2025
- Cancelled1.3%
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
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 29 | ▼ 6.5% |
| February | 28 | 26 | ▼ 7.1% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 26 | 31 | ▲ 19.2% |
| June | 26 | 30 | ▲ 15.4% |
| July | 26 | 31 | ▲ 19.2% |
| August | 20 | – | – |
| September | 17 | – | – |
| October | 29 | – | in progress |
| November | 29 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 198 | 208 | ▲ 5.1% |
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 | 81.5% | 83.3% | ▲ 2.3% |
| March | 96.8% | 90.0% | ▼ 7.0% |
| April | 83.3% | 83.3% | 0.0% |
| May | 76.9% | 90.3% | ▲ 17.4% |
| June | 88.5% | 86.7% | ▼ 2.0% |
| July | 84.6% | 86.7% | ▲ 2.4% |
| August | 90.0% | – | – |
| September | 94.1% | – | – |
| October | 93.1% | – | in progress |
| November | 86.2% | – | – |
| December | 85.7% | – | – |
| Year-to-date average (Jan–Jul) | 85.0% | 87.6% | ▲ 3.1% |
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 | 1 | 1 | 0.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
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.
Cancellation share
- Not cancelled 98.7% 601
- Cancelled 1.3% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS ATL Boston Logan International Airport – Hartsfield Jackson Atlanta International Airport | 1,521 | 11.7 min | 86.9% | 609 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 31 | 30 | 80.0% | 1 |
| January 2025 | 31 | 30 | 83.3% | 1 |
| February 2025 | 28 | 27 | 81.5% | 1 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 26 | 26 | 76.9% | 0 |
| June 2025 | 26 | 26 | 88.5% | 0 |
| July 2025 | 26 | 26 | 84.6% | 0 |
| August 2025 | 20 | 20 | 90.0% | 0 |
| September 2025 | 17 | 17 | 94.1% | 0 |
| October 2025 | 29 | 29 | 93.1% | 0 |
| November 2025 | 29 | 29 | 86.2% | 0 |
| December 2025 | 28 | 28 | 85.7% | 0 |
| January 2026 | 29 | 28 | 92.9% | 1 |
| February 2026 | 26 | 24 | 83.3% | 2 |
| March 2026 | 31 | 30 | 90.0% | 1 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 30 | 30 | 86.7% | 0 |
| July 2026 | 31 | 30 | 86.7% | 1 |