DL1566
DL1566 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Phoenix to Detroit. Of 478 departures recorded from October 2024 to July 2026, 79.7% left on time, according to the US BTS.
- On-time departures79.7%of 478 flights
- Average delay10.3 min
- July 202628▲ 21.7%vs July 2025
- Cancelled1.3%
- Legs flown under this number5
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 | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 19 | 6 | ▼ 68.4% |
| June | 22 | 15 | ▼ 31.8% |
| July | 23 | 28 | ▲ 21.7% |
| August | 2 | – | – |
| September | 8 | – | – |
| October | – | – | in progress |
| November | 6 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 184 | 169 | ▼ 8.2% |
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 | 96.8% | 77.4% | ▼ 20.0% |
| February | 78.6% | 78.6% | 0.0% |
| March | 83.9% | 93.3% | ▲ 11.3% |
| April | 89.7% | 83.3% | ▼ 7.1% |
| May | 84.2% | 66.7% | ▼ 20.8% |
| June | 77.3% | 60.0% | ▼ 22.4% |
| July | 63.6% | 66.7% | ▲ 4.8% |
| August | 100.0% | – | – |
| September | 87.5% | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 46.4% | – | – |
| Year-to-date average (Jan–Jul) | 82.0% | 75.1% | ▼ 8.4% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
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 98.7% 472
- Cancelled 1.3% 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 |
|---|---|---|---|---|
| PHX DTW Phoenix Sky Harbor International Airport – Detroit Metropolitan Wayne County Airport | 2,683 | 9.7 min | 80.8% | 416 |
| IAH DTW George Bush Intercontinental Airport – Detroit Metropolitan Wayne County Airport | 1,731 | 7.6 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 29 | 29 | 82.8% | 0 |
| January 2025 | 31 | 31 | 96.8% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 30 | 29 | 89.7% | 1 |
| May 2025 | 19 | 19 | 84.2% | 0 |
| June 2025 | 22 | 22 | 77.3% | 0 |
| July 2025 | 23 | 22 | 63.6% | 1 |
| August 2025 | 2 | 2 | 100.0% | 0 |
| September 2025 | 8 | 8 | 87.5% | 0 |
| November 2025 | 6 | 6 | 100.0% | 0 |
| December 2025 | 30 | 28 | 46.4% | 2 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 31 | 30 | 93.3% | 1 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 6 | 6 | 66.7% | 0 |
| June 2026 | 15 | 15 | 60.0% | 0 |
| July 2026 | 28 | 27 | 66.7% | 1 |