UA431
UA431 (United Airlines) is a multi-stop service on 14 routes, busiest Denver to Grand Junction. Of 1,002 departures recorded from October 2024 to July 2026, 76.3% left on time, according to the US BTS.
- On-time departures76.3%of 1,002 flights
- Average delay17.0 min
- July 202631▼ 49.2%vs July 2025
- Cancelled0.1%
- 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 | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 55 | 55 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 62 | 42 | ▼ 32.3% |
| June | 60 | 54 | ▼ 10.0% |
| July | 61 | 31 | ▼ 49.2% |
| August | 43 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 59 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 327 | 271 | ▼ 17.1% |
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% | 93.6% | ▲ 7.4% |
| February | 78.6% | 82.1% | ▲ 4.5% |
| March | 74.6% | 72.7% | ▼ 2.4% |
| April | 63.3% | 83.3% | ▲ 31.6% |
| May | 54.8% | 73.8% | ▲ 34.6% |
| June | 43.3% | 64.2% | ▲ 48.0% |
| July | 77.1% | 51.6% | ▼ 33.0% |
| August | 69.8% | – | – |
| September | 85.0% | – | – |
| October | 90.3% | – | in progress |
| November | 89.8% | – | – |
| December | 71.9% | – | – |
| Year-to-date average (Jan–Jul) | 68.4% | 74.5% | ▲ 8.9% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.9% 1,001
- Cancelled 0.1% 1
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN GJT Denver International Airport – Grand Junction Regional Airport | 341 | 20.5 min | 71.4% | 569 |
| SJC DEN Mineta San Jose International Airport – Denver International Airport | 1,522 | -3.5 min | 96.1% | 103 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | -2.5 min | 98.5% | 67 |
| IAD DEN Washington Dulles International Airport – Denver International Airport | 2,332 | 10.2 min | 82.1% | 56 |
| BNA SFO Nashville International Airport – San Francisco International Airport | 3,161 | 20.3 min | 77.8% | 36 |
| BZN DEN Bozeman Yellowstone International Airport – Denver International Airport | 844 | 19.2 min | 76.5% | 35 |
| STL DEN St. Louis Lambert International Airport – Denver International Airport | 1,236 | 74.0 min | 48.6% | 35 |
| SFO BOS San Francisco International Airport – Boston Logan International Airport | 4,341 | 12.2 min | 74.3% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 87.5% | 0 |
| November 2024 | 59 | 59 | 91.5% | 0 |
| December 2024 | 49 | 49 | 98.0% | 0 |
| January 2025 | 31 | 31 | 87.1% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 55 | 55 | 74.6% | 0 |
| April 2025 | 30 | 30 | 63.3% | 0 |
| May 2025 | 62 | 62 | 54.8% | 0 |
| June 2025 | 60 | 60 | 43.3% | 0 |
| July 2025 | 61 | 61 | 77.1% | 0 |
| August 2025 | 43 | 43 | 69.8% | 0 |
| September 2025 | 60 | 60 | 85.0% | 0 |
| October 2025 | 62 | 62 | 90.3% | 0 |
| November 2025 | 59 | 59 | 89.8% | 0 |
| December 2025 | 32 | 32 | 71.9% | 0 |
| January 2026 | 31 | 31 | 93.6% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 55 | 55 | 72.7% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 42 | 42 | 73.8% | 0 |
| June 2026 | 54 | 53 | 64.2% | 1 |
| July 2026 | 31 | 31 | 51.6% | 0 |