DL1686
DL1686 (Delta Air Lines) is a multi-stop service on 10 routes, busiest Detroit to Philadelphia. Of 851 departures recorded from October 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 851 flights
- Average delay20.7 min
- July 202646▲ 0.0%vs July 2025
- Cancelled1.9%
- Legs flown under this number10
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 10 | 62 | ▲ 520.0% |
| February | – | 56 | – |
| March | 23 | 38 | ▲ 65.2% |
| April | 30 | 30 | 0.0% |
| May | 46 | 46 | 0.0% |
| June | 48 | 46 | ▼ 4.2% |
| July | 46 | 46 | 0.0% |
| August | 40 | – | – |
| September | 34 | – | – |
| October | 46 | – | in progress |
| November | 36 | – | – |
| December | 57 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 90.0% | 75.0% | ▼ 16.7% |
| February | – | 90.7% | – |
| March | 56.5% | 83.8% | ▲ 48.2% |
| April | 83.3% | 80.0% | ▼ 4.0% |
| May | 73.9% | 69.1% | ▼ 6.6% |
| June | 58.3% | 68.2% | ▲ 16.9% |
| July | 47.7% | 53.5% | ▲ 12.1% |
| August | 50.0% | – | – |
| September | 88.2% | – | – |
| October | 82.6% | – | in progress |
| November | 77.8% | – | – |
| December | 70.2% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | – | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 4 | – |
| June | 0 | 2 | – |
| July | 2 | 3 | ▲ 50.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 98.1% 835
- Cancelled 1.9% 16
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
8Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 28 | 28 | 89.3% | 0 |
| November 2024 | 36 | 36 | 94.4% | 0 |
| December 2024 | 47 | 47 | 61.7% | 0 |
| January 2025 | 10 | 10 | 90.0% | 0 |
| March 2025 | 23 | 23 | 56.5% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 46 | 46 | 73.9% | 0 |
| June 2025 | 48 | 48 | 58.3% | 0 |
| July 2025 | 46 | 44 | 47.7% | 2 |
| August 2025 | 40 | 40 | 50.0% | 0 |
| September 2025 | 34 | 34 | 88.2% | 0 |
| October 2025 | 46 | 46 | 82.6% | 0 |
| November 2025 | 36 | 36 | 77.8% | 0 |
| December 2025 | 57 | 57 | 70.2% | 0 |
| January 2026 | 62 | 60 | 75.0% | 2 |
| February 2026 | 56 | 54 | 90.7% | 2 |
| March 2026 | 38 | 37 | 83.8% | 1 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 46 | 42 | 69.1% | 4 |
| June 2026 | 46 | 44 | 68.2% | 2 |
| July 2026 | 46 | 43 | 53.5% | 3 |