UA1800
UA1800 (United Airlines) is a multi-stop service on 22 routes, busiest San Francisco to Los Angeles. Of 855 departures recorded from October 2024 to July 2026, 82.4% left on time, according to the US BTS.
- On-time departures82.4%of 855 flights
- Average delay9.6 min
- July 202660▲ 93.5%vs July 2025
- Cancelled1.3%
- Legs flown under this number22
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 | 43 | ▲ 38.7% |
| February | 28 | 31 | ▲ 10.7% |
| March | 51 | 48 | ▼ 5.9% |
| April | 26 | 26 | 0.0% |
| May | 31 | 30 | ▼ 3.2% |
| June | 30 | 36 | ▲ 20.0% |
| July | 31 | 60 | ▲ 93.5% |
| August | 31 | – | – |
| September | 36 | – | – |
| October | 87 | – | in progress |
| November | 58 | – | – |
| December | 60 | – | – |
| Year to date (Jan–Jul) | 228 | 274 | ▲ 20.2% |
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 | 87.1% | 95.2% | ▲ 9.3% |
| February | 75.0% | 77.4% | ▲ 3.2% |
| March | 74.5% | 95.7% | ▲ 28.5% |
| April | 60.0% | 96.2% | ▲ 60.3% |
| May | 96.8% | 100.0% | ▲ 3.3% |
| June | 96.7% | 51.4% | ▼ 46.8% |
| July | 51.6% | 67.9% | ▲ 31.6% |
| August | 64.5% | – | – |
| September | 88.9% | – | – |
| October | 94.3% | – | in progress |
| November | 74.1% | – | – |
| December | 78.3% | – | – |
| Year-to-date average (Jan–Jul) | 77.4% | 83.4% | ▲ 7.8% |
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 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 7 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 10 | ▲ 900.0% |
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 98.7% 844
- Cancelled 1.3% 11
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 31 | 31 | 93.6% | 0 |
| January 2025 | 31 | 31 | 87.1% | 0 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 51 | 51 | 74.5% | 0 |
| April 2025 | 26 | 25 | 60.0% | 1 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 96.7% | 0 |
| July 2025 | 31 | 31 | 51.6% | 0 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 36 | 36 | 88.9% | 0 |
| October 2025 | 87 | 87 | 94.3% | 0 |
| November 2025 | 58 | 58 | 74.1% | 0 |
| December 2025 | 60 | 60 | 78.3% | 0 |
| January 2026 | 43 | 42 | 95.2% | 1 |
| February 2026 | 31 | 31 | 77.4% | 0 |
| March 2026 | 48 | 47 | 95.7% | 1 |
| April 2026 | 26 | 26 | 96.2% | 0 |
| May 2026 | 30 | 30 | 100.0% | 0 |
| June 2026 | 36 | 35 | 51.4% | 1 |
| July 2026 | 60 | 53 | 67.9% | 7 |