UA1230
UA1230 (United Airlines) is a multi-stop service on 12 routes, busiest San Francisco to Denver. Of 453 departures recorded from November 2024 to July 2026, 80.9% left on time, according to the US BTS.
- On-time departures80.9%of 453 flights
- Average delay10.0 min
- July 202631▼ 40.4%vs July 2025
- Cancelled0.4%
- Legs flown under this number12
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 6 | 24 | ▲ 300.0% |
| February | 10 | 28 | ▲ 180.0% |
| March | 17 | 14 | ▼ 17.6% |
| April | – | 26 | – |
| May | 13 | 28 | ▲ 115.4% |
| June | 49 | 30 | ▼ 38.8% |
| July | 52 | 31 | ▼ 40.4% |
| August | 30 | – | – |
| September | – | – | – |
| October | 6 | – | in progress |
| November | 29 | – | – |
| December | 1 | – | – |
according to the US BTS · November 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 69.6% | ▲ 39.1% |
| February | 70.0% | 71.4% | ▲ 2.0% |
| March | 88.2% | 92.9% | ▲ 5.2% |
| April | – | 76.9% | – |
| May | 76.9% | 85.7% | ▲ 11.4% |
| June | 77.6% | 66.7% | ▼ 14.0% |
| July | 84.6% | 71.0% | ▼ 16.1% |
| August | 86.2% | – | – |
| September | – | – | – |
| October | 100.0% | – | in progress |
| November | 93.1% | – | – |
| December | 100.0% | – | – |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · November 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 99.6% 451
- Cancelled 0.4% 2
Share of all recorded flights in the period, all legs. · Nov 1, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 7.9 min | 83.7% | 153 |
| SFO FLL San Francisco International Airport – Fort Lauderdale Hollywood International Airport | 4,151 | 13.3 min | 73.7% | 99 |
| DEN MIA Denver International Airport – Miami International Airport | 2,749 | 6.5 min | 83.6% | 56 |
| SFO CLE San Francisco International Airport – Cleveland Hopkins International Airport | 3,470 | 0.4 min | 94.4% | 36 |
| IAD EWR Washington Dulles International Airport – Newark Liberty International Airport | 341 | 18.8 min | 74.2% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 29 | 29 | 93.1% | 0 |
| December 2024 | 30 | 30 | 90.0% | 0 |
| January 2025 | 6 | 6 | 50.0% | 0 |
| February 2025 | 10 | 10 | 70.0% | 0 |
| March 2025 | 17 | 17 | 88.2% | 0 |
| May 2025 | 13 | 13 | 76.9% | 0 |
| June 2025 | 49 | 49 | 77.6% | 0 |
| July 2025 | 52 | 52 | 84.6% | 0 |
| August 2025 | 30 | 29 | 86.2% | 1 |
| October 2025 | 6 | 6 | 100.0% | 0 |
| November 2025 | 29 | 29 | 93.1% | 0 |
| December 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 24 | 23 | 69.6% | 1 |
| February 2026 | 28 | 28 | 71.4% | 0 |
| March 2026 | 14 | 14 | 92.9% | 0 |
| April 2026 | 26 | 26 | 76.9% | 0 |
| May 2026 | 28 | 28 | 85.7% | 0 |
| June 2026 | 30 | 30 | 66.7% | 0 |
| July 2026 | 31 | 31 | 71.0% | 0 |