DL1877
DL1877 (Delta Air Lines) is a multi-stop service on 6 routes, busiest New York to San Juan. Of 548 departures recorded from October 2024 to May 2026, 91.3% left on time, according to the US BTS.
- On-time departures91.3%of 548 flights
- Average delay3.1 min
- May 20266▼ 50.0%vs May 2025
- Cancelled0.9%
- Legs flown under this number6
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 62 | 6 | ▼ 90.3% |
| February | 56 | 6 | ▼ 89.3% |
| March | 62 | 8 | ▼ 87.1% |
| April | 60 | 24 | ▼ 60.0% |
| May | 12 | 6 | ▼ 50.0% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 40 | – | in progress |
| November | 44 | – | – |
| December | 38 | – | – |
| Year to date (Jan–May) | 252 | 50 | ▼ 80.2% |
according to the US BTS · October 2024 → May 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 90.0% | 100.0% | ▲ 11.1% |
| February | 87.5% | 100.0% | ▲ 14.3% |
| March | 90.2% | 50.0% | ▼ 44.5% |
| April | 95.0% | 100.0% | ▲ 5.3% |
| May | 75.0% | 100.0% | ▲ 33.3% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 90.0% | – | in progress |
| November | 95.5% | – | – |
| December | 86.8% | – | – |
| Year-to-date average (Jan–May) | 87.5% | 90.0% | ▲ 2.8% |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–May) | 3 | 2 | ▼ 33.3% |
according to the US BTS · October 2024 → May 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 99.1% 543
- Cancelled 0.9% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 4, 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 SJU John F. Kennedy International Airport – Luis Munoz Marin International Airport | 2,578 | 0.1 min | 94.8% | 268 |
| SJU JFK Luis Munoz Marin International Airport – John F. Kennedy International Airport | 2,578 | 7.1 min | 87.3% | 230 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 40 | 40 | 95.0% | 0 |
| December 2024 | 44 | 44 | 95.5% | 0 |
| January 2025 | 62 | 60 | 90.0% | 2 |
| February 2025 | 56 | 56 | 87.5% | 0 |
| March 2025 | 62 | 61 | 90.2% | 1 |
| April 2025 | 60 | 60 | 95.0% | 0 |
| May 2025 | 12 | 12 | 75.0% | 0 |
| October 2025 | 40 | 40 | 90.0% | 0 |
| November 2025 | 44 | 44 | 95.5% | 0 |
| December 2025 | 38 | 38 | 86.8% | 0 |
| January 2026 | 6 | 6 | 100.0% | 0 |
| February 2026 | 6 | 6 | 100.0% | 0 |
| March 2026 | 8 | 8 | 50.0% | 0 |
| April 2026 | 24 | 22 | 100.0% | 2 |
| May 2026 | 6 | 6 | 100.0% | 0 |