DL670
DL670 (Delta Air Lines) is a multi-stop service on 9 routes, busiest New York to San Francisco. Of 677 departures recorded from October 2024 to July 2026, 85.1% left on time, according to the US BTS.
- On-time departures85.1%of 677 flights
- Average delay7.9 min
- July 20264▼ 82.6%vs July 2025
- Cancelled1.2%
- Legs flown under this number9
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 | 59 | 49 | ▼ 16.9% |
| February | 52 | 45 | ▼ 13.5% |
| March | 61 | 55 | ▼ 9.8% |
| April | 43 | 58 | ▲ 34.9% |
| May | 31 | 15 | ▼ 51.6% |
| June | 10 | 4 | ▼ 60.0% |
| July | 23 | 4 | ▼ 82.6% |
| August | 29 | – | – |
| September | 13 | – | – |
| October | 15 | – | in progress |
| November | 5 | – | – |
| December | 12 | – | – |
| Year to date (Jan–Jul) | 279 | 230 | ▼ 17.6% |
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 | 91.5% | 87.2% | ▼ 4.7% |
| February | 74.5% | 87.8% | ▲ 17.8% |
| March | 91.8% | 87.3% | ▼ 4.9% |
| April | 90.7% | 82.8% | ▼ 8.8% |
| May | 80.7% | 66.7% | ▼ 17.3% |
| June | 70.0% | 100.0% | ▲ 42.9% |
| July | 91.3% | 66.7% | ▼ 27.0% |
| August | 89.7% | – | – |
| September | 61.5% | – | – |
| October | 93.3% | – | in progress |
| November | 100.0% | – | – |
| December | 58.3% | – | – |
| Year-to-date average (Jan–Jul) | 84.4% | 82.6% | ▼ 2.0% |
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 | 1 | 4 | ▲ 300.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 98.8% 669
- Cancelled 1.2% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 25, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| JFK SFO John F. Kennedy International Airport – San Francisco International Airport | 4,152 | 12.3 min | 83.4% | 355 |
| SFO JFK San Francisco International Airport – John F. Kennedy International Airport | 4,152 | 3.8 min | 86.8% | 238 |
| SJC DTW Mineta San Jose International Airport – Detroit Metropolitan Wayne County Airport | 3,311 | -1.0 min | 89.7% | 58 |
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 | 44 | 44 | 84.1% | 0 |
| January 2025 | 59 | 59 | 91.5% | 0 |
| February 2025 | 52 | 51 | 74.5% | 1 |
| March 2025 | 61 | 61 | 91.8% | 0 |
| April 2025 | 43 | 43 | 90.7% | 0 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 10 | 10 | 70.0% | 0 |
| July 2025 | 23 | 23 | 91.3% | 0 |
| August 2025 | 29 | 29 | 89.7% | 0 |
| September 2025 | 13 | 13 | 61.5% | 0 |
| October 2025 | 15 | 15 | 93.3% | 0 |
| November 2025 | 5 | 5 | 100.0% | 0 |
| December 2025 | 12 | 12 | 58.3% | 0 |
| January 2026 | 49 | 47 | 87.2% | 2 |
| February 2026 | 45 | 41 | 87.8% | 4 |
| March 2026 | 55 | 55 | 87.3% | 0 |
| April 2026 | 58 | 58 | 82.8% | 0 |
| May 2026 | 15 | 15 | 66.7% | 0 |
| June 2026 | 4 | 4 | 100.0% | 0 |
| July 2026 | 4 | 3 | 66.7% | 1 |