UA642
UA642 (United Airlines) is a multi-stop service on 19 routes, busiest Dulles to Phoenix. Of 591 departures recorded from October 2024 to July 2026, 76.8% left on time, according to the US BTS.
- On-time departures76.8%of 591 flights
- Average delay16.2 min
- July 202631▲ 82.4%vs July 2025
- Cancelled2.4%
- Legs flown under this number19
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 | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 14 | 29 | ▲ 107.1% |
| June | 17 | 30 | ▲ 76.5% |
| July | 17 | 31 | ▲ 82.4% |
| August | 19 | – | – |
| September | 27 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 168 | 210 | ▲ 25.0% |
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 | 72.4% | 83.3% | ▲ 15.1% |
| February | 82.1% | 76.9% | ▼ 6.4% |
| March | 86.7% | 74.2% | ▼ 14.4% |
| April | 51.7% | 73.3% | ▲ 41.8% |
| May | 0.0% | 62.1% | – |
| June | 58.8% | 83.3% | ▲ 41.7% |
| July | 94.1% | 79.3% | ▼ 15.7% |
| August | 94.7% | – | – |
| September | 96.3% | – | – |
| October | 100.0% | – | in progress |
| November | 80.0% | – | – |
| December | 90.3% | – | – |
| Year-to-date average (Jan–Jul) | 63.7% | 76.1% | ▲ 19.4% |
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 | 2 | 1 | ▼ 50.0% |
| February | 0 | 2 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 1 | 0 | ▼ 100.0% |
| May | 5 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 9 | 5 | ▼ 44.4% |
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 97.6% 577
- Cancelled 2.4% 14
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAD PHX Washington Dulles International Airport – Phoenix Sky Harbor International Airport | 3,141 | 7.1 min | 87.6% | 138 |
| CHS EWR Charleston International Airport – Newark Liberty International Airport | 1,011 | 43.7 min | 53.8% | 127 |
| MCO EWR Orlando International Airport – Newark Liberty International Airport | 1,511 | 16.1 min | 69.4% | 74 |
| EWR ATL Newark Liberty International Airport – Hartsfield Jackson Atlanta International Airport | 1,199 | 13.8 min | 78.1% | 65 |
| DEN BOS Denver International Airport – Boston Logan International Airport | 2,816 | 1.0 min | 93.8% | 32 |
| DEN EWR Denver International Airport – Newark Liberty International Airport | 2,576 | -7.0 min | 100.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 24 | 24 | 54.2% | 0 |
| December 2024 | 31 | 31 | 64.5% | 0 |
| January 2025 | 31 | 29 | 72.4% | 2 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 31 | 30 | 86.7% | 1 |
| April 2025 | 30 | 29 | 51.7% | 1 |
| May 2025 | 14 | 9 | 0.0% | 5 |
| June 2025 | 17 | 17 | 58.8% | 0 |
| July 2025 | 17 | 17 | 94.1% | 0 |
| August 2025 | 19 | 19 | 94.7% | 0 |
| September 2025 | 27 | 27 | 96.3% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 30 | 30 | 80.0% | 0 |
| December 2025 | 31 | 31 | 90.3% | 0 |
| January 2026 | 31 | 30 | 83.3% | 1 |
| February 2026 | 28 | 26 | 76.9% | 2 |
| March 2026 | 31 | 31 | 74.2% | 0 |
| April 2026 | 30 | 30 | 73.3% | 0 |
| May 2026 | 29 | 29 | 62.1% | 0 |
| June 2026 | 30 | 30 | 83.3% | 0 |
| July 2026 | 31 | 29 | 79.3% | 2 |