DL679
DL679 (Delta Air Lines) is a multi-stop service on 2 routes, busiest New York to San Francisco. Of 644 departures recorded from October 2024 to July 2026, 81.2% left on time, according to the US BTS.
- On-time departures81.2%of 644 flights
- Average delay11.9 min
- July 202627▼ 12.9%vs July 2025
- Cancelled0.8%
- 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 | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 28 | 28 | 0.0% |
| April | 26 | 30 | ▲ 15.4% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 27 | ▼ 10.0% |
| July | 31 | 27 | ▼ 12.9% |
| August | 31 | – | – |
| September | 27 | – | – |
| October | 30 | – | in progress |
| November | 28 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 204 | 202 | ▼ 1.0% |
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 | 93.6% | 73.3% | ▼ 21.6% |
| February | 78.6% | 77.8% | ▼ 1.0% |
| March | 67.9% | 89.3% | ▲ 31.6% |
| April | 84.6% | 83.3% | ▼ 1.5% |
| May | 86.7% | 80.7% | ▼ 6.9% |
| June | 70.0% | 63.0% | ▼ 10.1% |
| July | 83.3% | 76.0% | ▼ 8.8% |
| August | 90.3% | – | – |
| September | 85.2% | – | – |
| October | 90.0% | – | in progress |
| November | 75.0% | – | – |
| December | 65.5% | – | – |
| Year-to-date average (Jan–Jul) | 80.7% | 77.6% | ▼ 3.8% |
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 | 1 | – |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 2 | ▲ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 99.2% 639
- Cancelled 0.8% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| JFK SFO John F. Kennedy International Airport – San Francisco International Airport | 4,152 | 12.1 min | 80.9% | 632 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 32 | 32 | 93.8% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 28 | 28 | 67.9% | 0 |
| April 2025 | 26 | 26 | 84.6% | 0 |
| May 2025 | 30 | 30 | 86.7% | 0 |
| June 2025 | 30 | 30 | 70.0% | 0 |
| July 2025 | 31 | 30 | 83.3% | 1 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 27 | 27 | 85.2% | 0 |
| October 2025 | 30 | 30 | 90.0% | 0 |
| November 2025 | 28 | 28 | 75.0% | 0 |
| December 2025 | 29 | 29 | 65.5% | 0 |
| January 2026 | 31 | 30 | 73.3% | 1 |
| February 2026 | 28 | 27 | 77.8% | 1 |
| March 2026 | 28 | 28 | 89.3% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 27 | 27 | 63.0% | 0 |
| July 2026 | 27 | 25 | 76.0% | 2 |