DL791
DL791 (Delta Air Lines) is a multi-stop service on 2 routes, busiest New York to Phoenix. Of 1,037 departures recorded from October 2024 to July 2026, 85.4% left on time, according to the US BTS.
- On-time departures85.4%of 1,037 flights
- Average delay7.7 min
- July 202662▲ 0.0%vs July 2025
- Cancelled2.5%
- 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 | 39 | 35 | ▼ 10.3% |
| February | 32 | 45 | ▲ 40.6% |
| March | 33 | 62 | ▲ 87.9% |
| April | 30 | 42 | ▲ 40.0% |
| May | 31 | 56 | ▲ 80.6% |
| June | 53 | 60 | ▲ 13.2% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 36 | – | in progress |
| November | 51 | – | – |
| December | 62 | – | – |
| Year to date (Jan–Jul) | 280 | 362 | ▲ 29.3% |
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 | 94.9% | 81.8% | ▼ 13.8% |
| February | 96.9% | 75.6% | ▼ 22.0% |
| March | 90.9% | 76.3% | ▼ 16.1% |
| April | 90.0% | 85.7% | ▼ 4.8% |
| May | 93.6% | 98.2% | ▲ 5.0% |
| June | 75.5% | 78.3% | ▲ 3.8% |
| July | 82.0% | 81.0% | ▼ 1.1% |
| August | 85.5% | – | – |
| September | 93.3% | – | – |
| October | 97.1% | – | in progress |
| November | 76.5% | – | – |
| December | 70.6% | – | – |
| Year-to-date average (Jan–Jul) | 89.1% | 82.4% | ▼ 7.5% |
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 | 2 | – |
| February | 0 | 4 | – |
| March | 0 | 3 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 4 | ▲ 300.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 1 | 13 | ▲ 1,200.0% |
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 97.5% 1,011
- Cancelled 2.5% 26
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 |
|---|---|---|---|---|
| JFK PHX John F. Kennedy International Airport – Phoenix Sky Harbor International Airport | 3,458 | 2.5 min | 90.7% | 658 |
| PHX JFK Phoenix Sky Harbor International Airport – John F. Kennedy International Airport | 3,458 | 16.6 min | 76.0% | 379 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 40 | 40 | 97.5% | 0 |
| December 2024 | 44 | 44 | 84.1% | 0 |
| January 2025 | 39 | 39 | 94.9% | 0 |
| February 2025 | 32 | 32 | 96.9% | 0 |
| March 2025 | 33 | 33 | 90.9% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 53 | 53 | 75.5% | 0 |
| July 2025 | 62 | 61 | 82.0% | 1 |
| August 2025 | 62 | 62 | 85.5% | 0 |
| September 2025 | 60 | 60 | 93.3% | 0 |
| October 2025 | 36 | 35 | 97.1% | 1 |
| November 2025 | 51 | 51 | 76.5% | 0 |
| December 2025 | 62 | 51 | 70.6% | 11 |
| January 2026 | 35 | 33 | 81.8% | 2 |
| February 2026 | 45 | 41 | 75.6% | 4 |
| March 2026 | 62 | 59 | 76.3% | 3 |
| April 2026 | 42 | 42 | 85.7% | 0 |
| May 2026 | 56 | 56 | 98.2% | 0 |
| June 2026 | 60 | 60 | 78.3% | 0 |
| July 2026 | 62 | 58 | 81.0% | 4 |