UA559
UA559 (United Airlines) is a multi-stop service on 13 routes, busiest Newark to Miami. Of 355 departures recorded from October 2024 to May 2026, 88.3% left on time, according to the US BTS.
- On-time departures88.3%of 355 flights
- Average delay2.8 min
- May 202619▼ 9.5%vs May 2025
- Cancelled1.1%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods12 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | 16 | 17 | ▲ 6.3% |
| March | 7 | 31 | ▲ 342.9% |
| April | 42 | 30 | ▼ 28.6% |
| May | 21 | 19 | ▼ 9.5% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | 29 | – | – |
| October | 30 | – | in progress |
| November | 31 | – | – |
| December | 17 | – | – |
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 periods12 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | 62.5% | 100.0% | ▲ 60.0% |
| March | 71.4% | 90.3% | ▲ 26.4% |
| April | 85.7% | 100.0% | ▲ 16.7% |
| May | 60.0% | 100.0% | ▲ 66.7% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | 96.4% | – | – |
| October | 96.7% | – | in progress |
| November | 90.3% | – | – |
| December | 94.1% | – | – |
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 periods12 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
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 98.9% 351
- Cancelled 1.1% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 20, 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 |
|---|---|---|---|---|
| EWR MIA Newark Liberty International Airport – Miami International Airport | 1,750 | -2.9 min | 96.5% | 175 |
| ORD RDU Chicago O'Hare International Airport – Raleigh-Durham International Airport | 1,039 | 0.4 min | 91.7% | 36 |
| DEN SAT Denver International Airport – San Antonio International Airport | 1,280 | 3.9 min | 87.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 83.3% | 0 |
| November 2024 | 29 | 29 | 93.1% | 0 |
| December 2024 | 18 | 18 | 72.2% | 0 |
| February 2025 | 16 | 16 | 62.5% | 0 |
| March 2025 | 7 | 7 | 71.4% | 0 |
| April 2025 | 42 | 42 | 85.7% | 0 |
| May 2025 | 21 | 20 | 60.0% | 1 |
| September 2025 | 29 | 28 | 96.4% | 1 |
| October 2025 | 30 | 30 | 96.7% | 0 |
| November 2025 | 31 | 31 | 90.3% | 0 |
| December 2025 | 17 | 17 | 94.1% | 0 |
| February 2026 | 17 | 15 | 100.0% | 2 |
| March 2026 | 31 | 31 | 90.3% | 0 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 19 | 19 | 100.0% | 0 |