UA233
UA233 (United Airlines) is a multi-stop service on 20 routes, busiest Los Angeles to San Francisco. Of 715 departures recorded from October 2024 to July 2026, 82.3% left on time, according to the US BTS.
- On-time departures82.3%of 715 flights
- Average delay11.5 min
- July 202648▲ 128.6%vs July 2025
- Cancelled1.1%
- Legs flown under this number20
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 56 | ▲ 80.6% |
| February | 28 | 53 | ▲ 89.3% |
| March | 31 | 52 | ▲ 67.7% |
| April | 30 | 30 | 0.0% |
| May | 27 | 31 | ▲ 14.8% |
| June | 24 | 33 | ▲ 37.5% |
| July | 21 | 48 | ▲ 128.6% |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 29 | – | in progress |
| November | 25 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 192 | 303 | ▲ 57.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 93.3% | 88.9% | ▼ 4.8% |
| February | 71.4% | 83.0% | ▲ 16.2% |
| March | 90.3% | 96.2% | ▲ 6.5% |
| April | 82.8% | 83.3% | ▲ 0.7% |
| May | 84.0% | 74.2% | ▼ 11.7% |
| June | 56.5% | 84.9% | ▲ 50.1% |
| July | 38.1% | 77.1% | ▲ 102.3% |
| August | 88.0% | – | – |
| September | 80.0% | – | – |
| October | 86.2% | – | in progress |
| November | 72.0% | – | – |
| December | 86.2% | – | – |
| Year-to-date average (Jan–Jul) | 73.8% | 83.9% | ▲ 13.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 2 | 0 | ▼ 100.0% |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 2 | ▼ 60.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.9% 707
- 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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX SFO Los Angeles International Airport – San Francisco International Airport | 543 | 6.7 min | 85.3% | 197 |
| AUS LAX Austin Bergstrom International Airport – Los Angeles International Airport | 1,995 | 9.9 min | 88.3% | 113 |
| ORD AUS Chicago O'Hare International Airport – Austin Bergstrom International Airport | 1,574 | 13.1 min | 78.7% | 75 |
| AUS DEN Austin Bergstrom International Airport – Denver International Airport | 1,249 | 34.3 min | 55.0% | 62 |
| SFO MCO San Francisco International Airport – Orlando International Airport | 3,929 | 5.9 min | 89.5% | 38 |
| SFO IAD San Francisco International Airport – Washington Dulles International Airport | 3,883 | 0.9 min | 97.1% | 37 |
| ORD TVC Chicago O'Hare International Airport – Cherry Capital Airport | 360 | 7.7 min | 83.8% | 37 |
| BZN EWR Bozeman Yellowstone International Airport – Newark Liberty International Airport | 3,021 | 27.3 min | 77.8% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 31 | 31 | 93.6% | 0 |
| January 2025 | 31 | 30 | 93.3% | 1 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 29 | 82.8% | 1 |
| May 2025 | 27 | 25 | 84.0% | 2 |
| June 2025 | 24 | 23 | 56.5% | 1 |
| July 2025 | 21 | 21 | 38.1% | 0 |
| August 2025 | 26 | 25 | 88.0% | 1 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 29 | 29 | 86.2% | 0 |
| November 2025 | 25 | 25 | 72.0% | 0 |
| December 2025 | 29 | 29 | 86.2% | 0 |
| January 2026 | 56 | 54 | 88.9% | 2 |
| February 2026 | 53 | 53 | 83.0% | 0 |
| March 2026 | 52 | 52 | 96.2% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 74.2% | 0 |
| June 2026 | 33 | 33 | 84.9% | 0 |
| July 2026 | 48 | 48 | 77.1% | 0 |