UA1957
UA1957 (United Airlines) is a multi-stop service on 16 routes, busiest San Francisco to Kahului. Of 805 departures recorded from October 2024 to July 2026, 84.2% left on time, according to the US BTS.
- On-time departures84.2%of 805 flights
- Average delay11.2 min
- July 202658▼ 6.5%vs July 2025
- Cancelled0.4%
- Legs flown under this number16
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 | 31 | 0.0% |
| February | 38 | 20 | ▼ 47.4% |
| March | 28 | 27 | ▼ 3.6% |
| April | 30 | 21 | ▼ 30.0% |
| May | 31 | 31 | 0.0% |
| June | 60 | 35 | ▼ 41.7% |
| July | 62 | 58 | ▼ 6.5% |
| August | 62 | – | – |
| September | 27 | – | – |
| October | 30 | – | in progress |
| November | 54 | – | – |
| December | 48 | – | – |
| Year to date (Jan–Jul) | 280 | 223 | ▼ 20.4% |
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 | 86.7% | 87.1% | ▲ 0.5% |
| February | 92.1% | 80.0% | ▼ 13.1% |
| March | 100.0% | 88.5% | ▼ 11.5% |
| April | 90.0% | 81.0% | ▼ 10.1% |
| May | 90.3% | 51.6% | ▼ 42.9% |
| June | 85.0% | 77.1% | ▼ 9.2% |
| July | 83.6% | 74.1% | ▼ 11.3% |
| August | 87.1% | – | – |
| September | 92.6% | – | – |
| October | 83.3% | – | in progress |
| November | 77.8% | – | – |
| December | 93.8% | – | – |
| Year-to-date average (Jan–Jul) | 89.7% | 77.1% | ▼ 14.1% |
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 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.6% 802
- Cancelled 0.4% 3
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO OGG San Francisco International Airport – Kahului International Airport | 3,761 | 3.4 min | 88.4% | 207 |
| DTW IAH Detroit Metropolitan Wayne County Airport – George Bush Intercontinental Airport | 1,731 | 7.4 min | 89.9% | 159 |
| IAH BOS George Bush Intercontinental Airport – Boston Logan International Airport | 2,567 | 29.7 min | 63.4% | 93 |
| MIA SFO Miami International Airport – San Francisco International Airport | 4,154 | 10.7 min | 82.6% | 69 |
| SFO ABQ San Francisco International Airport – Albuquerque International Sunport | 1,439 | 2.3 min | 85.0% | 60 |
| MCO SFO Orlando International Airport – San Francisco International Airport | 3,929 | 36.9 min | 81.1% | 54 |
| LAS IAH Harry Reid International Airport – George Bush Intercontinental Airport | 1,963 | 17.3 min | 86.5% | 37 |
| LGA IAH LaGuardia Airport – George Bush Intercontinental Airport | 2,277 | 10.6 min | 84.4% | 32 |
| BNA SFO Nashville International Airport – San Francisco International Airport | 3,161 | 4.1 min | 90.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 31 | 31 | 74.2% | 0 |
| January 2025 | 31 | 30 | 86.7% | 1 |
| February 2025 | 38 | 38 | 92.1% | 0 |
| March 2025 | 28 | 28 | 100.0% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 60 | 60 | 85.0% | 0 |
| July 2025 | 62 | 61 | 83.6% | 1 |
| August 2025 | 62 | 62 | 87.1% | 0 |
| September 2025 | 27 | 27 | 92.6% | 0 |
| October 2025 | 30 | 30 | 83.3% | 0 |
| November 2025 | 54 | 54 | 77.8% | 0 |
| December 2025 | 48 | 48 | 93.8% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 20 | 20 | 80.0% | 0 |
| March 2026 | 27 | 26 | 88.5% | 1 |
| April 2026 | 21 | 21 | 81.0% | 0 |
| May 2026 | 31 | 31 | 51.6% | 0 |
| June 2026 | 35 | 35 | 77.1% | 0 |
| July 2026 | 58 | 58 | 74.1% | 0 |