UA1791
UA1791 (United Airlines) is a multi-stop service on 14 routes, busiest Los Angeles to San Francisco. Of 1,086 departures recorded from October 2024 to July 2026, 79.2% left on time, according to the US BTS.
- On-time departures79.2%of 1,086 flights
- Average delay11.1 min
- July 202658▲ 0.0%vs July 2025
- Cancelled0.2%
- Legs flown under this number14
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 | 77 | 37 | ▼ 51.9% |
| February | 67 | 33 | ▼ 50.7% |
| March | 38 | 33 | ▼ 13.2% |
| April | 60 | 60 | 0.0% |
| May | 50 | 60 | ▲ 20.0% |
| June | 31 | 56 | ▲ 80.6% |
| July | 58 | 58 | 0.0% |
| August | 55 | – | – |
| September | 40 | – | – |
| October | 30 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 381 | 337 | ▼ 11.5% |
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 | 85.5% | 86.5% | ▲ 1.1% |
| February | 77.6% | 84.9% | ▲ 9.3% |
| March | 68.4% | 87.9% | ▲ 28.4% |
| April | 90.0% | 76.7% | ▼ 14.8% |
| May | 75.5% | 63.3% | ▼ 16.1% |
| June | 93.6% | 71.4% | ▼ 23.6% |
| July | 79.3% | 74.1% | ▼ 6.5% |
| August | 87.3% | – | – |
| September | 87.5% | – | – |
| October | 76.7% | – | in progress |
| November | 82.8% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 81.4% | 77.8% | ▼ 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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 0 | ▼ 100.0% |
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 99.8% 1,084
- Cancelled 0.2% 2
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX SFO Los Angeles International Airport – San Francisco International Airport | 543 | 8.9 min | 79.9% | 579 |
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 9.9 min | 81.6% | 114 |
| SFO IAD San Francisco International Airport – Washington Dulles International Airport | 3,883 | 16.0 min | 80.7% | 93 |
| SFO ORD San Francisco International Airport – Chicago O'Hare International Airport | 2,964 | 21.5 min | 78.0% | 91 |
| ORD EWR Chicago O'Hare International Airport – Newark Liberty International Airport | 1,154 | 12.3 min | 76.5% | 51 |
| SFO EWR San Francisco International Airport – Newark Liberty International Airport | 4,118 | 30.9 min | 50.0% | 37 |
| DEN LGA Denver International Airport – LaGuardia Airport | 2,600 | 10.6 min | 71.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 43 | 43 | 76.7% | 0 |
| November 2024 | 89 | 89 | 79.8% | 0 |
| December 2024 | 51 | 51 | 68.6% | 0 |
| January 2025 | 77 | 76 | 85.5% | 1 |
| February 2025 | 67 | 67 | 77.6% | 0 |
| March 2025 | 38 | 38 | 68.4% | 0 |
| April 2025 | 60 | 60 | 90.0% | 0 |
| May 2025 | 50 | 49 | 75.5% | 1 |
| June 2025 | 31 | 31 | 93.6% | 0 |
| July 2025 | 58 | 58 | 79.3% | 0 |
| August 2025 | 55 | 55 | 87.3% | 0 |
| September 2025 | 40 | 40 | 87.5% | 0 |
| October 2025 | 30 | 30 | 76.7% | 0 |
| November 2025 | 29 | 29 | 82.8% | 0 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 37 | 37 | 86.5% | 0 |
| February 2026 | 33 | 33 | 84.9% | 0 |
| March 2026 | 33 | 33 | 87.9% | 0 |
| April 2026 | 60 | 60 | 76.7% | 0 |
| May 2026 | 60 | 60 | 63.3% | 0 |
| June 2026 | 56 | 56 | 71.4% | 0 |
| July 2026 | 58 | 58 | 74.1% | 0 |