DL366
DL366 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Phoenix. Of 781 departures recorded from October 2024 to July 2026, 83.3% left on time, according to the US BTS.
- On-time departures83.3%of 781 flights
- Average delay14.6 min
- July 202627▲ 3.8%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 | 60 | 35 | ▼ 41.7% |
| February | 56 | 45 | ▼ 19.6% |
| March | 39 | 62 | ▲ 59.0% |
| April | 30 | 42 | ▲ 40.0% |
| May | 31 | 31 | 0.0% |
| June | 27 | 27 | 0.0% |
| July | 26 | 27 | ▲ 3.8% |
| August | 29 | – | – |
| September | 25 | – | – |
| October | 30 | – | in progress |
| November | 27 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 269 | 269 | 0.0% |
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 | 76.3% | 85.3% | ▲ 11.8% |
| February | 89.3% | 71.1% | ▼ 20.4% |
| March | 87.2% | 89.8% | ▲ 3.0% |
| April | 90.0% | 85.7% | ▼ 4.8% |
| May | 83.9% | 87.1% | ▲ 3.9% |
| June | 70.4% | 92.6% | ▲ 31.6% |
| July | 76.9% | 63.0% | ▼ 18.1% |
| August | 89.7% | – | – |
| September | 80.0% | – | – |
| October | 82.8% | – | in progress |
| November | 81.5% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.0% | 82.1% | ▲ 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 | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 3 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| 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% 773
- Cancelled 1.0% 8
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL PHX Hartsfield Jackson Atlanta International Airport – Phoenix Sky Harbor International Airport | 2,549 | 5.5 min | 84.6% | 425 |
| PHX ATL Phoenix Sky Harbor International Airport – Hartsfield Jackson Atlanta International Airport | 2,549 | 25.4 min | 81.8% | 356 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 92.3% | 0 |
| November 2024 | 34 | 34 | 88.2% | 0 |
| December 2024 | 52 | 52 | 86.5% | 0 |
| January 2025 | 60 | 59 | 76.3% | 1 |
| February 2025 | 56 | 56 | 89.3% | 0 |
| March 2025 | 39 | 39 | 87.2% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 27 | 27 | 70.4% | 0 |
| July 2025 | 26 | 26 | 76.9% | 0 |
| August 2025 | 29 | 29 | 89.7% | 0 |
| September 2025 | 25 | 25 | 80.0% | 0 |
| October 2025 | 30 | 29 | 82.8% | 1 |
| November 2025 | 27 | 27 | 81.5% | 0 |
| December 2025 | 33 | 31 | 80.7% | 2 |
| January 2026 | 35 | 34 | 85.3% | 1 |
| February 2026 | 45 | 45 | 71.1% | 0 |
| March 2026 | 62 | 59 | 89.8% | 3 |
| April 2026 | 42 | 42 | 85.7% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 27 | 27 | 92.6% | 0 |
| July 2026 | 27 | 27 | 63.0% | 0 |