UA1639
UA1639 (United Airlines) is a multi-stop service on 21 routes, busiest Newark to Miami. Of 829 departures recorded from October 2024 to July 2026, 76.3% left on time, according to the US BTS.
- On-time departures76.3%of 829 flights
- Average delay20.7 min
- July 202661▼ 33.7%vs July 2025
- Cancelled1.9%
- Legs flown under this number21
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 | 37 | 16 | ▼ 56.8% |
| February | 38 | 14 | ▼ 63.2% |
| March | 51 | 23 | ▼ 54.9% |
| April | 29 | 31 | ▲ 6.9% |
| May | 40 | 62 | ▲ 55.0% |
| June | 30 | 60 | ▲ 100.0% |
| July | 92 | 61 | ▼ 33.7% |
| August | 49 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 317 | 267 | ▼ 15.8% |
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 | 86.5% | 87.5% | ▲ 1.2% |
| February | 79.0% | 71.4% | ▼ 9.5% |
| March | 78.4% | 66.7% | ▼ 15.0% |
| April | 75.0% | 87.1% | ▲ 16.1% |
| May | 71.8% | 74.2% | ▲ 3.3% |
| June | 55.2% | 81.4% | ▲ 47.5% |
| July | 55.3% | 82.8% | ▲ 49.7% |
| August | 77.6% | – | – |
| September | 96.7% | – | – |
| October | 96.8% | – | in progress |
| November | 96.6% | – | – |
| December | 81.5% | – | – |
| Year-to-date average (Jan–Jul) | 71.6% | 78.7% | ▲ 10.0% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 1 | 0 | ▼ 100.0% |
| June | 1 | 1 | 0.0% |
| July | 7 | 3 | ▼ 57.1% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 10 | 6 | ▼ 40.0% |
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 98.1% 813
- Cancelled 1.9% 16
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
12Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 88.2% | 0 |
| November 2024 | 17 | 17 | 70.6% | 0 |
| December 2024 | 45 | 45 | 55.6% | 0 |
| January 2025 | 37 | 37 | 86.5% | 0 |
| February 2025 | 38 | 38 | 79.0% | 0 |
| March 2025 | 51 | 51 | 78.4% | 0 |
| April 2025 | 29 | 28 | 75.0% | 1 |
| May 2025 | 40 | 39 | 71.8% | 1 |
| June 2025 | 30 | 29 | 55.2% | 1 |
| July 2025 | 92 | 85 | 55.3% | 7 |
| August 2025 | 49 | 49 | 77.6% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 29 | 29 | 96.6% | 0 |
| December 2025 | 27 | 27 | 81.5% | 0 |
| January 2026 | 16 | 16 | 87.5% | 0 |
| February 2026 | 14 | 14 | 71.4% | 0 |
| March 2026 | 23 | 21 | 66.7% | 2 |
| April 2026 | 31 | 31 | 87.1% | 0 |
| May 2026 | 62 | 62 | 74.2% | 0 |
| June 2026 | 60 | 59 | 81.4% | 1 |
| July 2026 | 61 | 58 | 82.8% | 3 |