UA1588
UA1588 (United Airlines) is a multi-stop service on 9 routes, busiest Denver to Redmond. Of 837 departures recorded from October 2024 to July 2026, 73.9% left on time, according to the US BTS.
- On-time departures73.9%of 837 flights
- Average delay17.1 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.0%
- Legs flown under this number9
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 | 35 | 31 | ▼ 11.4% |
| February | 60 | 28 | ▼ 53.3% |
| March | 41 | 34 | ▼ 17.1% |
| April | 30 | 60 | ▲ 100.0% |
| May | 31 | 51 | ▲ 64.5% |
| June | 30 | 30 | 0.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 37 | – | in progress |
| November | 58 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 258 | 264 | ▲ 2.3% |
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 | 78.8% | 83.3% | ▲ 5.8% |
| February | 75.0% | 85.7% | ▲ 14.3% |
| March | 85.4% | 78.8% | ▼ 7.7% |
| April | 56.7% | 91.7% | ▲ 61.8% |
| May | 74.2% | 70.6% | ▼ 4.9% |
| June | 53.3% | 46.7% | ▼ 12.5% |
| July | 43.3% | 53.3% | ▲ 23.1% |
| August | 41.9% | – | – |
| September | 83.3% | – | – |
| October | 64.9% | – | in progress |
| November | 89.7% | – | – |
| December | 65.6% | – | – |
| Year-to-date average (Jan–Jul) | 66.7% | 72.9% | ▲ 9.3% |
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 | 2 | 1 | ▼ 50.0% |
| 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) | 3 | 2 | ▼ 33.3% |
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 99.0% 829
- Cancelled 1.0% 8
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN RDM Denver International Airport – Roberts Field | 1,442 | 21.4 min | 70.2% | 587 |
| ORD DEN Chicago O'Hare International Airport – Denver International Airport | 1,426 | 19.0 min | 68.9% | 74 |
| MSY DEN Louis Armstrong New Orleans International Airport – Denver International Airport | 1,708 | -3.7 min | 94.4% | 36 |
| DTW DEN Detroit Metropolitan Wayne County Airport – Denver International Airport | 1,802 | 8.1 min | 77.8% | 36 |
| PNS DEN Pensacola International Airport – Denver International Airport | 1,896 | 3.2 min | 87.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 25 | 25 | 88.0% | 0 |
| November 2024 | 58 | 58 | 84.5% | 0 |
| December 2024 | 44 | 41 | 87.8% | 3 |
| January 2025 | 35 | 33 | 78.8% | 2 |
| February 2025 | 60 | 60 | 75.0% | 0 |
| March 2025 | 41 | 41 | 85.4% | 0 |
| April 2025 | 30 | 30 | 56.7% | 0 |
| May 2025 | 31 | 31 | 74.2% | 0 |
| June 2025 | 30 | 30 | 53.3% | 0 |
| July 2025 | 31 | 30 | 43.3% | 1 |
| August 2025 | 31 | 31 | 41.9% | 0 |
| September 2025 | 30 | 30 | 83.3% | 0 |
| October 2025 | 37 | 37 | 64.9% | 0 |
| November 2025 | 58 | 58 | 89.7% | 0 |
| December 2025 | 32 | 32 | 65.6% | 0 |
| January 2026 | 31 | 30 | 83.3% | 1 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 34 | 33 | 78.8% | 1 |
| April 2026 | 60 | 60 | 91.7% | 0 |
| May 2026 | 51 | 51 | 70.6% | 0 |
| June 2026 | 30 | 30 | 46.7% | 0 |
| July 2026 | 30 | 30 | 53.3% | 0 |