DL849
DL849 (Delta Air Lines) is a multi-stop service on 8 routes, busiest Atlanta to Boston. Of 666 departures recorded from October 2024 to July 2026, 86.0% left on time, according to the US BTS.
- On-time departures86.0%of 666 flights
- Average delay4.1 min
- July 202625▼ 19.4%vs July 2025
- Cancelled1.1%
- Legs flown under this number8
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 | 31 | 58 | ▲ 87.1% |
| February | 28 | 56 | ▲ 100.0% |
| March | 31 | 58 | ▲ 87.1% |
| April | 30 | 16 | ▼ 46.7% |
| May | 31 | 20 | ▼ 35.5% |
| June | 30 | 3 | ▼ 90.0% |
| July | 31 | 25 | ▼ 19.4% |
| August | 31 | – | – |
| September | 27 | – | – |
| October | 30 | – | in progress |
| November | 30 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 212 | 236 | ▲ 11.3% |
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 | 86.2% | 84.5% | ▼ 2.0% |
| February | 89.3% | 73.2% | ▼ 18.0% |
| March | 93.6% | 89.7% | ▼ 4.2% |
| April | 86.2% | 81.3% | ▼ 5.8% |
| May | 96.8% | 63.2% | ▼ 34.7% |
| June | 86.2% | 66.7% | ▼ 22.7% |
| July | 87.1% | 48.0% | ▼ 44.9% |
| August | 96.8% | – | – |
| September | 92.6% | – | – |
| October | 100.0% | – | in progress |
| November | 90.0% | – | – |
| December | 89.3% | – | – |
| Year-to-date average (Jan–Jul) | 89.3% | 72.3% | ▼ 19.0% |
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 | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 1 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 98.9% 659
- Cancelled 1.1% 7
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL BOS Hartsfield Jackson Atlanta International Airport – Boston Logan International Airport | 1,521 | 1.3 min | 91.1% | 433 |
| EGE ATL Eagle County Regional Airport – Hartsfield Jackson Atlanta International Airport | 2,108 | 3.5 min | 79.8% | 84 |
| ATL EGE Hartsfield Jackson Atlanta International Airport – Eagle County Regional Airport | 2,108 | 6.2 min | 84.5% | 84 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 26 | 26 | 96.2% | 0 |
| December 2024 | 24 | 24 | 79.2% | 0 |
| January 2025 | 31 | 29 | 86.2% | 2 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 29 | 86.2% | 1 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 29 | 86.2% | 1 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 31 | 31 | 96.8% | 0 |
| September 2025 | 27 | 27 | 92.6% | 0 |
| October 2025 | 30 | 30 | 100.0% | 0 |
| November 2025 | 30 | 30 | 90.0% | 0 |
| December 2025 | 30 | 28 | 89.3% | 2 |
| January 2026 | 58 | 58 | 84.5% | 0 |
| February 2026 | 56 | 56 | 73.2% | 0 |
| March 2026 | 58 | 58 | 89.7% | 0 |
| April 2026 | 16 | 16 | 81.3% | 0 |
| May 2026 | 20 | 19 | 63.2% | 1 |
| June 2026 | 3 | 3 | 66.7% | 0 |
| July 2026 | 25 | 25 | 48.0% | 0 |