DL1546
DL1546 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Detroit to Baltimore. Of 1,167 departures recorded from October 2024 to July 2026, 86.8% left on time, according to the US BTS.
- On-time departures86.8%of 1,167 flights
- Average delay6.8 min
- July 202662▲ 82.4%vs July 2025
- Cancelled0.4%
- 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 | 62 | 50 | ▼ 19.4% |
| February | 56 | 44 | ▼ 21.4% |
| March | 62 | 54 | ▼ 12.9% |
| April | 60 | 51 | ▼ 15.0% |
| May | 62 | 60 | ▼ 3.2% |
| June | 60 | 60 | 0.0% |
| July | 34 | 62 | ▲ 82.4% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 20 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 396 | 381 | ▼ 3.8% |
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 | 85.0% | 81.3% | ▼ 4.4% |
| February | 76.8% | 86.4% | ▲ 12.5% |
| March | 93.6% | 88.9% | ▼ 5.0% |
| April | 81.7% | 96.1% | ▲ 17.6% |
| May | 95.2% | 83.3% | ▼ 12.4% |
| June | 88.3% | 78.0% | ▼ 11.7% |
| July | 79.4% | 83.9% | ▲ 5.6% |
| August | 85.5% | – | – |
| September | 91.7% | – | – |
| October | 98.4% | – | in progress |
| November | 90.0% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 85.7% | 85.4% | ▼ 0.4% |
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 | 2 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 99.6% 1,162
- Cancelled 0.4% 5
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 |
|---|---|---|---|---|
| DTW BWI Detroit Metropolitan Wayne County Airport – Baltimore/Washington International Thurgood Marshall Airport | 657 | 3.1 min | 87.8% | 584 |
| BWI DTW Baltimore/Washington International Thurgood Marshall Airport – Detroit Metropolitan Wayne County Airport | 657 | 10.4 min | 85.7% | 583 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 87.5% | 0 |
| November 2024 | 56 | 56 | 91.1% | 0 |
| December 2024 | 62 | 62 | 83.9% | 0 |
| January 2025 | 62 | 60 | 85.0% | 2 |
| February 2025 | 56 | 56 | 76.8% | 0 |
| March 2025 | 62 | 62 | 93.6% | 0 |
| April 2025 | 60 | 60 | 81.7% | 0 |
| May 2025 | 62 | 62 | 95.2% | 0 |
| June 2025 | 60 | 60 | 88.3% | 0 |
| July 2025 | 34 | 34 | 79.4% | 0 |
| August 2025 | 62 | 62 | 85.5% | 0 |
| September 2025 | 60 | 60 | 91.7% | 0 |
| October 2025 | 62 | 62 | 98.4% | 0 |
| November 2025 | 20 | 20 | 90.0% | 0 |
| December 2025 | 28 | 28 | 75.0% | 0 |
| January 2026 | 50 | 48 | 81.3% | 2 |
| February 2026 | 44 | 44 | 86.4% | 0 |
| March 2026 | 54 | 54 | 88.9% | 0 |
| April 2026 | 51 | 51 | 96.1% | 0 |
| May 2026 | 60 | 60 | 83.3% | 0 |
| June 2026 | 60 | 59 | 78.0% | 1 |
| July 2026 | 62 | 62 | 83.9% | 0 |