DL1707
DL1707 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Detroit to Boston. Of 497 departures recorded from October 2024 to July 2026, 61.2% left on time, according to the US BTS.
- On-time departures61.2%of 497 flights
- Average delay28.6 min
- July 202625▼ 7.4%vs July 2025
- Cancelled2.0%
- Legs flown under this number2
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 | 20 | 14 | ▼ 30.0% |
| February | 18 | 17 | ▼ 5.6% |
| March | 26 | 25 | ▼ 3.8% |
| April | 28 | 26 | ▼ 7.1% |
| May | 25 | 25 | 0.0% |
| June | 27 | 24 | ▼ 11.1% |
| July | 27 | 25 | ▼ 7.4% |
| August | 26 | – | – |
| September | 18 | – | – |
| October | 23 | – | in progress |
| November | 19 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 171 | 156 | ▼ 8.8% |
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 | 75.0% | 75.0% | 0.0% |
| February | 77.8% | 100.0% | ▲ 28.6% |
| March | 69.2% | 64.0% | ▼ 7.6% |
| April | 75.0% | 61.5% | ▼ 17.9% |
| May | 48.0% | 50.0% | ▲ 4.2% |
| June | 57.7% | 68.2% | ▲ 18.2% |
| July | 42.3% | 24.0% | ▼ 43.3% |
| August | 53.9% | – | – |
| September | 50.0% | – | – |
| October | 47.8% | – | in progress |
| November | 72.2% | – | – |
| December | 79.3% | – | – |
| Year-to-date average (Jan–Jul) | 63.6% | 63.2% | ▼ 0.5% |
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 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 1 | 2 | ▲ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 7 | ▲ 250.0% |
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 98.0% 487
- Cancelled 2.0% 10
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 |
|---|---|---|---|---|
| DTW BOS Detroit Metropolitan Wayne County Airport – Boston Logan International Airport | 1,015 | 28.9 min | 60.8% | 492 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 58.3% | 0 |
| November 2024 | 17 | 17 | 70.6% | 0 |
| December 2024 | 26 | 26 | 53.9% | 0 |
| January 2025 | 20 | 20 | 75.0% | 0 |
| February 2025 | 18 | 18 | 77.8% | 0 |
| March 2025 | 26 | 26 | 69.2% | 0 |
| April 2025 | 28 | 28 | 75.0% | 0 |
| May 2025 | 25 | 25 | 48.0% | 0 |
| June 2025 | 27 | 26 | 57.7% | 1 |
| July 2025 | 27 | 26 | 42.3% | 1 |
| August 2025 | 26 | 26 | 53.9% | 0 |
| September 2025 | 18 | 18 | 50.0% | 0 |
| October 2025 | 23 | 23 | 47.8% | 0 |
| November 2025 | 19 | 18 | 72.2% | 1 |
| December 2025 | 29 | 29 | 79.3% | 0 |
| January 2026 | 14 | 12 | 75.0% | 2 |
| February 2026 | 17 | 15 | 100.0% | 2 |
| March 2026 | 25 | 25 | 64.0% | 0 |
| April 2026 | 26 | 26 | 61.5% | 0 |
| May 2026 | 25 | 24 | 50.0% | 1 |
| June 2026 | 24 | 22 | 68.2% | 2 |
| July 2026 | 25 | 25 | 24.0% | 0 |