DL668
DL668 (Delta Air Lines) is a multi-stop service on 3 routes, busiest New York to San Francisco. Of 1,065 departures recorded from October 2024 to July 2026, 82.1% left on time, according to the US BTS.
- On-time departures82.1%of 1,065 flights
- Average delay13.7 min
- July 202662▲ 0.0%vs July 2025
- Cancelled1.8%
- Legs flown under this number3
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 | 27 | 58 | ▲ 114.8% |
| February | 24 | 56 | ▲ 133.3% |
| March | 26 | 62 | ▲ 138.5% |
| April | 26 | 56 | ▲ 115.4% |
| May | 55 | 62 | ▲ 12.7% |
| June | 60 | 60 | 0.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 59 | – | – |
| December | 49 | – | – |
| Year to date (Jan–Jul) | 280 | 416 | ▲ 48.6% |
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 | 100.0% | 85.5% | ▼ 14.5% |
| February | 95.8% | 82.7% | ▼ 13.7% |
| March | 84.6% | 93.3% | ▲ 10.3% |
| April | 100.0% | 82.1% | ▼ 17.9% |
| May | 83.6% | 77.4% | ▼ 7.4% |
| June | 73.3% | 83.9% | ▲ 14.5% |
| July | 71.7% | 70.5% | ▼ 1.6% |
| August | 83.6% | – | – |
| September | 85.0% | – | – |
| October | 82.3% | – | in progress |
| November | 78.0% | – | – |
| December | 68.1% | – | – |
| Year-to-date average (Jan–Jul) | 87.0% | 82.2% | ▼ 5.5% |
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 | 3 | – |
| February | 0 | 4 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 4 | – |
| July | 2 | 1 | ▼ 50.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 2 | 14 | ▲ 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 98.2% 1,046
- Cancelled 1.8% 19
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 SFO John F. Kennedy International Airport – San Francisco International Airport | 4,152 | 5.0 min | 90.5% | 630 |
| SFO JFK San Francisco International Airport – John F. Kennedy International Airport | 4,152 | 26.1 min | 70.2% | 432 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 28 | 28 | 89.3% | 0 |
| December 2024 | 29 | 29 | 82.8% | 0 |
| January 2025 | 27 | 27 | 100.0% | 0 |
| February 2025 | 24 | 24 | 95.8% | 0 |
| March 2025 | 26 | 26 | 84.6% | 0 |
| April 2025 | 26 | 26 | 100.0% | 0 |
| May 2025 | 55 | 55 | 83.6% | 0 |
| June 2025 | 60 | 60 | 73.3% | 0 |
| July 2025 | 62 | 60 | 71.7% | 2 |
| August 2025 | 62 | 61 | 83.6% | 1 |
| September 2025 | 60 | 60 | 85.0% | 0 |
| October 2025 | 62 | 62 | 82.3% | 0 |
| November 2025 | 59 | 59 | 78.0% | 0 |
| December 2025 | 49 | 47 | 68.1% | 2 |
| January 2026 | 58 | 55 | 85.5% | 3 |
| February 2026 | 56 | 52 | 82.7% | 4 |
| March 2026 | 62 | 60 | 93.3% | 2 |
| April 2026 | 56 | 56 | 82.1% | 0 |
| May 2026 | 62 | 62 | 77.4% | 0 |
| June 2026 | 60 | 56 | 83.9% | 4 |
| July 2026 | 62 | 61 | 70.5% | 1 |