UA333
UA333 (United Airlines) is a multi-stop service on 8 routes, busiest Boston to Los Angeles. Of 712 departures recorded from October 2024 to July 2026, 73.5% left on time, according to the US BTS.
- On-time departures73.5%of 712 flights
- Average delay20.8 min
- July 202658▲ 87.1%vs July 2025
- Cancelled0.8%
- Legs flown under this number8
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 | 23 | 30 | ▲ 30.4% |
| February | 24 | 24 | 0.0% |
| March | 31 | 53 | ▲ 71.0% |
| April | 30 | 31 | ▲ 3.3% |
| May | 31 | 51 | ▲ 64.5% |
| June | 30 | 35 | ▲ 16.7% |
| July | 31 | 58 | ▲ 87.1% |
| August | 30 | – | – |
| September | 27 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 200 | 282 | ▲ 41.0% |
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 | 91.3% | 65.5% | ▼ 28.2% |
| February | 70.8% | 77.3% | ▲ 9.1% |
| March | 93.6% | 74.5% | ▼ 20.4% |
| April | 83.3% | 83.9% | ▲ 0.6% |
| May | 67.7% | 78.4% | ▲ 15.8% |
| June | 80.0% | 54.3% | ▼ 32.1% |
| July | 67.7% | 67.2% | ▼ 0.7% |
| August | 70.0% | – | – |
| September | 46.2% | – | – |
| October | 64.5% | – | in progress |
| November | 73.3% | – | – |
| December | 67.7% | – | – |
| Year-to-date average (Jan–Jul) | 79.2% | 71.6% | ▼ 9.6% |
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 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 5 |
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 99.2% 706
- Cancelled 0.8% 6
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS LAX Boston Logan International Airport – Los Angeles International Airport | 4,193 | 20.7 min | 76.1% | 442 |
| DEN ELP Denver International Airport – El Paso International Airport | 908 | 22.8 min | 65.3% | 149 |
| EWR BOS Newark Liberty International Airport – Boston Logan International Airport | 322 | 31.2 min | 50.0% | 33 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 11.2 min | 84.4% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 96.7% | 0 |
| December 2024 | 31 | 31 | 67.7% | 0 |
| January 2025 | 23 | 23 | 91.3% | 0 |
| February 2025 | 24 | 24 | 70.8% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 31 | 31 | 67.7% | 0 |
| August 2025 | 30 | 30 | 70.0% | 0 |
| September 2025 | 27 | 26 | 46.2% | 1 |
| October 2025 | 31 | 31 | 64.5% | 0 |
| November 2025 | 30 | 30 | 73.3% | 0 |
| December 2025 | 31 | 31 | 67.7% | 0 |
| January 2026 | 30 | 29 | 65.5% | 1 |
| February 2026 | 24 | 22 | 77.3% | 2 |
| March 2026 | 53 | 51 | 74.5% | 2 |
| April 2026 | 31 | 31 | 83.9% | 0 |
| May 2026 | 51 | 51 | 78.4% | 0 |
| June 2026 | 35 | 35 | 54.3% | 0 |
| July 2026 | 58 | 58 | 67.2% | 0 |