DL1515
DL1515 (Delta Air Lines) is a multi-stop service on 15 routes, busiest St Louis to Minneapolis. Of 550 departures recorded from October 2024 to July 2026, 78.2% left on time, according to the US BTS.
- On-time departures78.2%of 550 flights
- Average delay12.6 min
- July 202631▲ 158.3%vs July 2025
- Cancelled0.9%
- Legs flown under this number15
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 | 7 | 33 | ▲ 371.4% |
| February | – | 28 | – |
| March | 23 | 34 | ▲ 47.8% |
| April | 14 | 30 | ▲ 114.3% |
| May | 50 | 30 | ▼ 40.0% |
| June | 14 | 30 | ▲ 114.3% |
| July | 12 | 31 | ▲ 158.3% |
| August | 17 | – | – |
| September | 29 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 37 | – | – |
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 | 100.0% | 75.0% | ▼ 25.0% |
| February | – | 64.3% | – |
| March | 69.6% | 54.6% | ▼ 21.6% |
| April | 64.3% | 70.0% | ▲ 8.9% |
| May | 68.0% | 90.0% | ▲ 32.4% |
| June | 78.6% | 93.1% | ▲ 18.5% |
| July | 58.3% | 87.1% | ▲ 49.3% |
| August | 94.1% | – | – |
| September | 96.6% | – | – |
| October | 87.1% | – | in progress |
| November | 85.7% | – | – |
| December | 74.3% | – | – |
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 | 1 | – |
| February | – | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 99.1% 545
- Cancelled 0.9% 5
Share of all recorded flights in the period, all legs. · Oct 13, 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 | 17 | 17 | 88.2% | 0 |
| November 2024 | 25 | 25 | 84.0% | 0 |
| December 2024 | 30 | 30 | 76.7% | 0 |
| January 2025 | 7 | 7 | 100.0% | 0 |
| March 2025 | 23 | 23 | 69.6% | 0 |
| April 2025 | 14 | 14 | 64.3% | 0 |
| May 2025 | 50 | 50 | 68.0% | 0 |
| June 2025 | 14 | 14 | 78.6% | 0 |
| July 2025 | 12 | 12 | 58.3% | 0 |
| August 2025 | 17 | 17 | 94.1% | 0 |
| September 2025 | 29 | 29 | 96.6% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 28 | 28 | 85.7% | 0 |
| December 2025 | 37 | 35 | 74.3% | 2 |
| January 2026 | 33 | 32 | 75.0% | 1 |
| February 2026 | 28 | 28 | 64.3% | 0 |
| March 2026 | 34 | 33 | 54.6% | 1 |
| April 2026 | 30 | 30 | 70.0% | 0 |
| May 2026 | 30 | 30 | 90.0% | 0 |
| June 2026 | 30 | 29 | 93.1% | 1 |
| July 2026 | 31 | 31 | 87.1% | 0 |