DL300
DL300 (Delta Air Lines) flies Atlanta to Boston. Of 611 departures recorded from October 2024 to July 2026, 65.6% left on time, according to the US BTS.
- On-time departures65.6%of 611 flights
- Average delay20.8 min
- July 202626▼ 16.1%vs July 2025
- Cancelled2.0%
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 | 30 | ▼ 3.2% |
| February | 28 | 28 | 0.0% |
| March | 25 | 31 | ▲ 24.0% |
| April | 26 | 30 | ▲ 15.4% |
| May | 31 | 6 | ▼ 80.6% |
| June | 30 | 24 | ▼ 20.0% |
| July | 31 | 26 | ▼ 16.1% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 202 | 175 | ▼ 13.4% |
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 | 70.0% | 67.9% | ▼ 3.1% |
| February | 75.0% | 61.5% | ▼ 17.9% |
| March | 68.0% | 53.3% | ▼ 21.6% |
| April | 76.9% | 56.7% | ▼ 26.3% |
| May | 64.5% | 83.3% | ▲ 29.2% |
| June | 41.4% | 69.6% | ▲ 68.1% |
| July | 39.3% | 46.2% | ▲ 17.5% |
| August | 67.7% | – | – |
| September | 66.7% | – | – |
| October | 83.9% | – | in progress |
| November | 66.7% | – | – |
| December | 64.5% | – | – |
| Year-to-date average (Jan–Jul) | 62.2% | 62.6% | ▲ 0.8% |
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 | 2 | ▲ 100.0% |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 1 | 0.0% |
| July | 3 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 6 | ▲ 20.0% |
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 98.0% 599
- Cancelled 2.0% 12
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 |
|---|---|---|---|---|
| ATL BOS Hartsfield Jackson Atlanta International Airport – Boston Logan International Airport | 1,521 | 20.8 min | 65.6% | 611 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 31 | 30 | 70.0% | 1 |
| January 2025 | 31 | 30 | 70.0% | 1 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 25 | 25 | 68.0% | 0 |
| April 2025 | 26 | 26 | 76.9% | 0 |
| May 2025 | 31 | 31 | 64.5% | 0 |
| June 2025 | 30 | 29 | 41.4% | 1 |
| July 2025 | 31 | 28 | 39.3% | 3 |
| August 2025 | 31 | 31 | 67.7% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 30 | 30 | 66.7% | 0 |
| December 2025 | 31 | 31 | 64.5% | 0 |
| January 2026 | 30 | 28 | 67.9% | 2 |
| February 2026 | 28 | 26 | 61.5% | 2 |
| March 2026 | 31 | 30 | 53.3% | 1 |
| April 2026 | 30 | 30 | 56.7% | 0 |
| May 2026 | 6 | 6 | 83.3% | 0 |
| June 2026 | 24 | 23 | 69.6% | 1 |
| July 2026 | 26 | 26 | 46.2% | 0 |