DL2646
DL2646 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Boston to Chicago. Of 744 departures recorded from October 2024 to July 2026, 64.7% left on time, according to the US BTS.
- On-time departures64.7%of 744 flights
- Average delay26.1 min
- July 202656▼ 1.8%vs July 2025
- Cancelled4.6%
- Legs flown under this number2
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 16 | 42 | ▲ 162.5% |
| April | 24 | 54 | ▲ 125.0% |
| May | 46 | 56 | ▲ 21.7% |
| June | 55 | 51 | ▼ 7.3% |
| July | 57 | 56 | ▼ 1.8% |
| August | 56 | – | – |
| September | 38 | – | – |
| October | 28 | – | in progress |
| November | 23 | – | – |
| December | 19 | – | – |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 81.3% | 62.9% | ▼ 22.6% |
| April | 83.3% | 68.6% | ▼ 17.6% |
| May | 64.3% | 74.6% | ▲ 16.0% |
| June | 47.3% | 57.8% | ▲ 22.2% |
| July | 46.3% | 64.7% | ▲ 39.8% |
| August | 63.6% | – | – |
| September | 47.4% | – | – |
| October | 44.4% | – | in progress |
| November | 77.3% | – | – |
| December | 70.6% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 0 | 7 | – |
| April | 0 | 3 | – |
| May | 4 | 1 | ▼ 75.0% |
| June | 0 | 6 | – |
| July | 3 | 5 | ▲ 66.7% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 1 | – | – |
| December | 2 | – | – |
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 95.4% 710
- Cancelled 4.6% 34
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 |
|---|---|---|---|---|
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 21.6 min | 67.2% | 442 |
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 32.9 min | 60.8% | 302 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 36 | 36 | 80.6% | 0 |
| November 2024 | 53 | 53 | 86.8% | 0 |
| December 2024 | 34 | 34 | 64.7% | 0 |
| March 2025 | 16 | 16 | 81.3% | 0 |
| April 2025 | 24 | 24 | 83.3% | 0 |
| May 2025 | 46 | 42 | 64.3% | 4 |
| June 2025 | 55 | 55 | 47.3% | 0 |
| July 2025 | 57 | 54 | 46.3% | 3 |
| August 2025 | 56 | 55 | 63.6% | 1 |
| September 2025 | 38 | 38 | 47.4% | 0 |
| October 2025 | 28 | 27 | 44.4% | 1 |
| November 2025 | 23 | 22 | 77.3% | 1 |
| December 2025 | 19 | 17 | 70.6% | 2 |
| March 2026 | 42 | 35 | 62.9% | 7 |
| April 2026 | 54 | 51 | 68.6% | 3 |
| May 2026 | 56 | 55 | 74.6% | 1 |
| June 2026 | 51 | 45 | 57.8% | 6 |
| July 2026 | 56 | 51 | 64.7% | 5 |