UA1252
UA1252 (United Airlines) is a multi-stop service on 15 routes, busiest Denver to Los Angeles. Of 1,018 departures recorded from October 2024 to July 2026, 86.5% left on time, according to the US BTS.
- On-time departures86.5%of 1,018 flights
- Average delay6.4 min
- July 202662▲ 8.8%vs July 2025
- Cancelled0.9%
- Legs flown under this number15
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 | 36 | ▲ 16.1% |
| February | 28 | 28 | 0.0% |
| March | 35 | 58 | ▲ 65.7% |
| April | 60 | 60 | 0.0% |
| May | 82 | 61 | ▼ 25.6% |
| June | 59 | 60 | ▲ 1.7% |
| July | 57 | 62 | ▲ 8.8% |
| August | 49 | – | – |
| September | 30 | – | – |
| October | 37 | – | in progress |
| November | 58 | – | – |
| December | 46 | – | – |
| Year to date (Jan–Jul) | 352 | 365 | ▲ 3.7% |
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 | 86.2% | 86.1% | ▼ 0.1% |
| February | 77.8% | 82.1% | ▲ 5.6% |
| March | 85.7% | 96.6% | ▲ 12.6% |
| April | 80.0% | 91.7% | ▲ 14.6% |
| May | 80.5% | 93.4% | ▲ 16.1% |
| June | 80.7% | 96.7% | ▲ 19.8% |
| July | 61.8% | 93.3% | ▲ 51.0% |
| August | 83.7% | – | – |
| September | 96.7% | – | – |
| October | 94.6% | – | in progress |
| November | 91.4% | – | – |
| December | 84.8% | – | – |
| Year-to-date average (Jan–Jul) | 79.0% | 91.4% | ▲ 15.8% |
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 | 2 | 0 | ▼ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 2 | 2 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 7 | 2 | ▼ 71.4% |
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 99.1% 1,009
- Cancelled 0.9% 9
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 |
|---|---|---|---|---|
| DEN LAX Denver International Airport – Los Angeles International Airport | 1,385 | 7.4 min | 86.5% | 378 |
| CLE IAD Cleveland Hopkins International Airport – Washington Dulles International Airport | 463 | -3.4 min | 96.6% | 148 |
| IAD ORD Washington Dulles International Airport – Chicago O'Hare International Airport | 945 | 0.4 min | 91.9% | 125 |
| LAX LAS Los Angeles International Airport – Harry Reid International Airport | 380 | 8.7 min | 78.3% | 60 |
| PHL DEN Philadelphia International Airport – Denver International Airport | 2,501 | 6.3 min | 86.5% | 53 |
| DEN ABQ Denver International Airport – Albuquerque International Sunport | 563 | 38.7 min | 55.9% | 36 |
| MEM DEN Frederick W. Smith International Airport – Denver International Airport | 1,401 | -5.3 min | 94.3% | 35 |
| RAP DEN Rapid City Regional Airport – Denver International Airport | 484 | 12.3 min | 71.9% | 32 |
| IND DEN Indianapolis International Airport – Denver International Airport | 1,568 | 22.2 min | 69.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 31 | 31 | 93.6% | 0 |
| January 2025 | 31 | 29 | 86.2% | 2 |
| February 2025 | 28 | 27 | 77.8% | 1 |
| March 2025 | 35 | 35 | 85.7% | 0 |
| April 2025 | 60 | 60 | 80.0% | 0 |
| May 2025 | 82 | 82 | 80.5% | 0 |
| June 2025 | 59 | 57 | 80.7% | 2 |
| July 2025 | 57 | 55 | 61.8% | 2 |
| August 2025 | 49 | 49 | 83.7% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 37 | 37 | 94.6% | 0 |
| November 2025 | 58 | 58 | 91.4% | 0 |
| December 2025 | 46 | 46 | 84.8% | 0 |
| January 2026 | 36 | 36 | 86.1% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 58 | 58 | 96.6% | 0 |
| April 2026 | 60 | 60 | 91.7% | 0 |
| May 2026 | 61 | 61 | 93.4% | 0 |
| June 2026 | 60 | 60 | 96.7% | 0 |
| July 2026 | 62 | 60 | 93.3% | 2 |