DL1541
DL1541 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Detroit to St Louis. Of 619 departures recorded from October 2024 to July 2026, 75.2% left on time, according to the US BTS.
- On-time departures75.2%of 619 flights
- Average delay14.7 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.0%
- 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 | 30 | 29 | ▼ 3.3% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 22 | – | – |
| September | 20 | – | – |
| October | 27 | – | in progress |
| November | 20 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 211 | 210 | ▼ 0.5% |
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 | 60.0% | 72.4% | ▲ 20.7% |
| February | 75.0% | 82.1% | ▲ 9.5% |
| March | 87.1% | 72.4% | ▼ 16.9% |
| April | 73.3% | 70.0% | ▼ 4.5% |
| May | 77.4% | 77.4% | 0.0% |
| June | 76.7% | 70.0% | ▼ 8.7% |
| July | 66.7% | 72.4% | ▲ 8.6% |
| August | 77.3% | – | – |
| September | 95.0% | – | – |
| October | 81.5% | – | in progress |
| November | 84.2% | – | – |
| December | 62.1% | – | – |
| Year-to-date average (Jan–Jul) | 73.7% | 73.8% | ▲ 0.1% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 2 | ▲ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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 99.0% 613
- Cancelled 1.0% 6
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 STL Detroit Metropolitan Wayne County Airport – St. Louis Lambert International Airport | 707 | 13.7 min | 76.2% | 585 |
| RSW DTW Southwest Florida International Airport – Detroit Metropolitan Wayne County Airport | 1,750 | 31.6 min | 58.8% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 31 | 31 | 64.5% | 0 |
| January 2025 | 30 | 30 | 60.0% | 0 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 73.3% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 30 | 30 | 76.7% | 0 |
| July 2025 | 31 | 30 | 66.7% | 1 |
| August 2025 | 22 | 22 | 77.3% | 0 |
| September 2025 | 20 | 20 | 95.0% | 0 |
| October 2025 | 27 | 27 | 81.5% | 0 |
| November 2025 | 20 | 19 | 84.2% | 1 |
| December 2025 | 29 | 29 | 62.1% | 0 |
| January 2026 | 29 | 29 | 72.4% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 29 | 72.4% | 2 |
| April 2026 | 30 | 30 | 70.0% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 29 | 72.4% | 2 |