DL900
DL900 (Delta Air Lines) is a multi-stop service on 3 routes, busiest Boston to Atlanta. Of 390 departures recorded from October 2024 to July 2026, 61.9% left on time, according to the US BTS.
- On-time departures61.9%of 390 flights
- Average delay26.2 min
- July 202614▼ 26.3%vs July 2025
- Cancelled1.8%
- 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 | 15 | 46 | ▲ 206.7% |
| February | 17 | 11 | ▼ 35.3% |
| March | 18 | 17 | ▼ 5.6% |
| April | 24 | 25 | ▲ 4.2% |
| May | 20 | 19 | ▼ 5.0% |
| June | 19 | 3 | ▼ 84.2% |
| July | 19 | 14 | ▼ 26.3% |
| August | 16 | – | – |
| September | 12 | – | – |
| October | 16 | – | in progress |
| November | 14 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 132 | 135 | ▲ 2.3% |
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 | 86.7% | 65.9% | ▼ 24.0% |
| February | 64.7% | 81.8% | ▲ 26.4% |
| March | 66.7% | 81.3% | ▲ 21.9% |
| April | 62.5% | 72.0% | ▲ 15.2% |
| May | 45.0% | 66.7% | ▲ 48.2% |
| June | 50.0% | 33.3% | ▼ 33.3% |
| July | 42.1% | 23.1% | ▼ 45.2% |
| August | 50.0% | – | – |
| September | 58.3% | – | – |
| October | 56.3% | – | in progress |
| November | 57.1% | – | – |
| December | 67.9% | – | – |
| Year-to-date average (Jan–Jul) | 59.7% | 60.6% | ▲ 1.5% |
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 | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 5 | ▲ 400.0% |
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 98.2% 383
- Cancelled 1.8% 7
Share of all recorded flights in the period, all legs. · Oct 13, 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 | 27.4 min | 61.3% | 356 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 50.0% | 0 |
| November 2024 | 12 | 12 | 75.0% | 0 |
| December 2024 | 17 | 16 | 68.8% | 1 |
| January 2025 | 15 | 15 | 86.7% | 0 |
| February 2025 | 17 | 17 | 64.7% | 0 |
| March 2025 | 18 | 18 | 66.7% | 0 |
| April 2025 | 24 | 24 | 62.5% | 0 |
| May 2025 | 20 | 20 | 45.0% | 0 |
| June 2025 | 19 | 18 | 50.0% | 1 |
| July 2025 | 19 | 19 | 42.1% | 0 |
| August 2025 | 16 | 16 | 50.0% | 0 |
| September 2025 | 12 | 12 | 58.3% | 0 |
| October 2025 | 16 | 16 | 56.3% | 0 |
| November 2025 | 14 | 14 | 57.1% | 0 |
| December 2025 | 28 | 28 | 67.9% | 0 |
| January 2026 | 46 | 44 | 65.9% | 2 |
| February 2026 | 11 | 11 | 81.8% | 0 |
| March 2026 | 17 | 16 | 81.3% | 1 |
| April 2026 | 25 | 25 | 72.0% | 0 |
| May 2026 | 19 | 18 | 66.7% | 1 |
| June 2026 | 3 | 3 | 33.3% | 0 |
| July 2026 | 14 | 13 | 23.1% | 1 |