UA548
UA548 (United Airlines) is a multi-stop service on 13 routes, busiest Newark to San Francisco. Of 698 departures recorded from October 2024 to July 2026, 79.1% left on time, according to the US BTS.
- On-time departures79.1%of 698 flights
- Average delay14.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number13
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 | 44 | 28 | ▼ 36.4% |
| March | 36 | 31 | ▼ 13.9% |
| April | 30 | 30 | 0.0% |
| May | 50 | 31 | ▼ 38.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 252 | 212 | ▼ 15.9% |
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 | 67.7% | 73.3% | ▲ 8.3% |
| February | 86.4% | 96.4% | ▲ 11.7% |
| March | 86.1% | 83.9% | ▼ 2.6% |
| April | 86.7% | 83.3% | ▼ 3.9% |
| May | 76.6% | 41.9% | ▼ 45.2% |
| June | 86.7% | 50.0% | ▼ 42.3% |
| July | 89.3% | 64.5% | ▼ 27.7% |
| August | 87.1% | – | – |
| September | 100.0% | – | – |
| October | 90.3% | – | in progress |
| November | 93.1% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.8% | 70.5% | ▼ 14.8% |
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 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 3 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 3 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 6 | 1 | ▼ 83.3% |
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 98.9% 690
- Cancelled 1.1% 8
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| EWR SFO Newark Liberty International Airport – San Francisco International Airport | 4,118 | 15.8 min | 77.7% | 222 |
| EWR TPA Newark Liberty International Airport – Tampa International Airport | 1,607 | 3.9 min | 89.1% | 187 |
| SFO MFR San Francisco International Airport – Rogue Valley International-Medford Airport | 530 | 35.3 min | 52.1% | 71 |
| ANC DEN Ted Stevens Anchorage International Airport – Denver International Airport | 3,863 | 13.1 min | 86.1% | 37 |
| DEN JAC Denver International Airport – Jackson Hole Airport | 653 | 3.8 min | 87.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 63.3% | 0 |
| December 2024 | 31 | 31 | 64.5% | 0 |
| January 2025 | 31 | 31 | 67.7% | 0 |
| February 2025 | 44 | 44 | 86.4% | 0 |
| March 2025 | 36 | 36 | 86.1% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 50 | 47 | 76.6% | 3 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 28 | 89.3% | 3 |
| August 2025 | 31 | 31 | 87.1% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 30 | 29 | 93.1% | 1 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 31 | 30 | 73.3% | 1 |
| February 2026 | 28 | 28 | 96.4% | 0 |
| March 2026 | 31 | 31 | 83.9% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 41.9% | 0 |
| June 2026 | 30 | 30 | 50.0% | 0 |
| July 2026 | 31 | 31 | 64.5% | 0 |