DL1859
DL1859 (Delta Air Lines) flies New York to San Juan. Of 643 departures recorded from October 2024 to July 2026, 67.9% left on time, according to the US BTS.
- On-time departures67.9%of 643 flights
- Average delay18.5 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.2%
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 29 | ▲ 11.5% |
| February | 24 | 24 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 203 | 206 | ▲ 1.5% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 69.2% | 40.7% | ▼ 41.2% |
| February | 75.0% | 50.0% | ▼ 33.3% |
| March | 64.5% | 87.1% | ▲ 35.0% |
| April | 76.7% | 80.0% | ▲ 4.3% |
| May | 83.9% | 61.3% | ▼ 26.9% |
| June | 63.3% | 60.0% | ▼ 5.3% |
| July | 54.8% | 50.0% | ▼ 8.8% |
| August | 75.9% | – | – |
| September | 66.7% | – | – |
| October | 77.4% | – | in progress |
| November | 66.7% | – | – |
| December | 56.7% | – | – |
| Year-to-date average (Jan–Jul) | 69.6% | 61.3% | ▼ 12.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 5 |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 98.8% 635
- Cancelled 1.2% 8
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 SJU John F. Kennedy International Airport – Luis Munoz Marin International Airport | 2,578 | 18.5 min | 67.9% | 643 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 70.0% | 0 |
| November 2024 | 30 | 30 | 73.3% | 0 |
| December 2024 | 31 | 31 | 83.9% | 0 |
| January 2025 | 26 | 26 | 69.2% | 0 |
| February 2025 | 24 | 24 | 75.0% | 0 |
| March 2025 | 31 | 31 | 64.5% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 30 | 30 | 63.3% | 0 |
| July 2025 | 31 | 31 | 54.8% | 0 |
| August 2025 | 31 | 29 | 75.9% | 2 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 31 | 31 | 77.4% | 0 |
| November 2025 | 30 | 30 | 66.7% | 0 |
| December 2025 | 31 | 30 | 56.7% | 1 |
| January 2026 | 29 | 27 | 40.7% | 2 |
| February 2026 | 24 | 22 | 50.0% | 2 |
| March 2026 | 31 | 31 | 87.1% | 0 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 31 | 31 | 61.3% | 0 |
| June 2026 | 30 | 30 | 60.0% | 0 |
| July 2026 | 31 | 30 | 50.0% | 1 |