UA648
UA648 (United Airlines) is a multi-stop service on 7 routes, busiest Newark to San Francisco. Of 737 departures recorded from October 2024 to July 2026, 74.1% left on time, according to the US BTS.
- On-time departures74.1%of 737 flights
- Average delay17.9 min
- July 202679▲ 154.8%vs July 2025
- Cancelled1.6%
- Legs flown under this number7
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 | 31 | 45 | ▲ 45.2% |
| June | 30 | 38 | ▲ 26.7% |
| July | 31 | 79 | ▲ 154.8% |
| August | 31 | – | – |
| September | 39 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 212 | 282 | ▲ 33.0% |
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 | 93.6% | 82.8% | ▼ 11.5% |
| February | 78.6% | 73.1% | ▼ 7.0% |
| March | 80.7% | 80.7% | 0.0% |
| April | 100.0% | 80.0% | ▼ 20.0% |
| May | 96.8% | 77.8% | ▼ 19.6% |
| June | 60.0% | 65.8% | ▲ 9.7% |
| July | 48.4% | 73.3% | ▲ 51.5% |
| August | 51.6% | – | – |
| September | 79.5% | – | – |
| October | 63.3% | – | in progress |
| November | 66.7% | – | – |
| December | 45.2% | – | – |
| Year-to-date average (Jan–Jul) | 79.7% | 76.2% | ▼ 4.4% |
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 | 0 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 4 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 8 | ▲ 700.0% |
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 98.4% 725
- Cancelled 1.6% 12
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| EWR SFO Newark Liberty International Airport – San Francisco International Airport | 4,118 | 19.7 min | 72.0% | 607 |
| STL EWR St. Louis Lambert International Airport – Newark Liberty International Airport | 1,400 | 1.8 min | 90.9% | 37 |
| BWI ORD Baltimore/Washington International Thurgood Marshall Airport – Chicago O'Hare International Airport | 998 | -6.5 min | 100.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 19 | 79.0% | 1 |
| November 2024 | 30 | 30 | 70.0% | 0 |
| December 2024 | 31 | 30 | 86.7% | 1 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 30 | 29 | 100.0% | 1 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 60.0% | 0 |
| July 2025 | 31 | 31 | 48.4% | 0 |
| August 2025 | 31 | 31 | 51.6% | 0 |
| September 2025 | 39 | 39 | 79.5% | 0 |
| October 2025 | 31 | 30 | 63.3% | 1 |
| November 2025 | 30 | 30 | 66.7% | 0 |
| December 2025 | 31 | 31 | 45.2% | 0 |
| January 2026 | 31 | 29 | 82.8% | 2 |
| February 2026 | 28 | 26 | 73.1% | 2 |
| March 2026 | 31 | 31 | 80.7% | 0 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 45 | 45 | 77.8% | 0 |
| June 2026 | 38 | 38 | 65.8% | 0 |
| July 2026 | 79 | 75 | 73.3% | 4 |