DL303
DL303 (Delta Air Lines) is a multi-stop service on 4 routes, busiest Dallas-Fort Worth to Boston. Of 856 departures recorded from October 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 856 flights
- Average delay24.2 min
- July 202633▼ 37.7%vs July 2025
- Cancelled2.5%
- Legs flown under this number4
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 | 30 | 25 | ▼ 16.7% |
| February | 28 | 23 | ▼ 17.9% |
| March | 31 | 27 | ▼ 12.9% |
| April | 28 | 42 | ▲ 50.0% |
| May | 47 | 50 | ▲ 6.4% |
| June | 52 | 54 | ▲ 3.8% |
| July | 53 | 33 | ▼ 37.7% |
| August | 44 | – | – |
| September | 46 | – | – |
| October | 54 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 269 | 254 | ▼ 5.6% |
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 | 79.3% | 69.6% | ▼ 12.3% |
| February | 76.9% | 90.5% | ▲ 17.6% |
| March | 74.2% | 81.5% | ▲ 9.8% |
| April | 64.3% | 88.1% | ▲ 37.0% |
| May | 58.7% | 89.8% | ▲ 53.0% |
| June | 50.0% | 75.9% | ▲ 51.9% |
| July | 43.1% | 81.3% | ▲ 88.3% |
| August | 65.9% | – | – |
| September | 68.2% | – | – |
| October | 61.1% | – | in progress |
| November | 66.7% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 63.8% | 82.4% | ▲ 29.1% |
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 | 1 | 2 | ▲ 100.0% |
| February | 2 | 2 | 0.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 2 | 1 | ▼ 50.0% |
| August | 3 | – | – |
| September | 2 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 3 | – | – |
| Year to date (Jan–Jul) | 6 | 6 | 0.0% |
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 97.5% 835
- Cancelled 2.5% 21
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 |
|---|---|---|---|---|
| DFW BOS Dallas Fort Worth International Airport – Boston Logan International Airport | 2,509 | 26.4 min | 71.1% | 480 |
| BOS DFW Boston Logan International Airport – Dallas Fort Worth International Airport | 2,509 | 21.4 min | 74.5% | 371 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 97.5% | 0 |
| November 2024 | 58 | 57 | 84.2% | 1 |
| December 2024 | 30 | 30 | 76.7% | 0 |
| January 2025 | 30 | 29 | 79.3% | 1 |
| February 2025 | 28 | 26 | 76.9% | 2 |
| March 2025 | 31 | 31 | 74.2% | 0 |
| April 2025 | 28 | 28 | 64.3% | 0 |
| May 2025 | 47 | 46 | 58.7% | 1 |
| June 2025 | 52 | 52 | 50.0% | 0 |
| July 2025 | 53 | 51 | 43.1% | 2 |
| August 2025 | 44 | 41 | 65.9% | 3 |
| September 2025 | 46 | 44 | 68.2% | 2 |
| October 2025 | 54 | 54 | 61.1% | 0 |
| November 2025 | 30 | 30 | 66.7% | 0 |
| December 2025 | 31 | 28 | 75.0% | 3 |
| January 2026 | 25 | 23 | 69.6% | 2 |
| February 2026 | 23 | 21 | 90.5% | 2 |
| March 2026 | 27 | 27 | 81.5% | 0 |
| April 2026 | 42 | 42 | 88.1% | 0 |
| May 2026 | 50 | 49 | 89.8% | 1 |
| June 2026 | 54 | 54 | 75.9% | 0 |
| July 2026 | 33 | 32 | 81.3% | 1 |