UA439
UA439 (United Airlines) is a multi-stop service on 19 routes, busiest Denver to Minneapolis. Of 693 departures recorded from October 2024 to July 2026, 72.3% left on time, according to the US BTS.
- On-time departures72.3%of 693 flights
- Average delay19.2 min
- July 202631▼ 49.2%vs July 2025
- Cancelled0.9%
- Legs flown under this number19
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 | 37 | 31 | ▼ 16.2% |
| February | 44 | 28 | ▼ 36.4% |
| March | 35 | 34 | ▼ 2.9% |
| April | 30 | 26 | ▼ 13.3% |
| May | 31 | 31 | 0.0% |
| June | 35 | 30 | ▼ 14.3% |
| July | 61 | 31 | ▼ 49.2% |
| August | 18 | – | – |
| September | 6 | – | – |
| October | 30 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 273 | 211 | ▼ 22.7% |
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 | 89.2% | 71.0% | ▼ 20.4% |
| February | 86.4% | 78.6% | ▼ 9.0% |
| March | 88.6% | 72.7% | ▼ 17.9% |
| April | 63.3% | 84.6% | ▲ 33.6% |
| May | 41.9% | 54.8% | ▲ 30.8% |
| June | 42.9% | 80.0% | ▲ 86.7% |
| July | 36.8% | 61.3% | ▲ 66.4% |
| August | 64.7% | – | – |
| September | 83.3% | – | – |
| October | 93.3% | – | in progress |
| November | 96.7% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 64.2% | 71.9% | ▲ 12.0% |
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 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 4 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 99.1% 687
- Cancelled 0.9% 6
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN MSP Denver International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,092 | 22.2 min | 66.3% | 271 |
| AUS DEN Austin Bergstrom International Airport – Denver International Airport | 1,249 | 22.0 min | 64.6% | 224 |
| LAX SEA Los Angeles International Airport – Seattle–Tacoma International Airport | 1,537 | -1.2 min | 97.2% | 36 |
| BOS IAH Boston Logan International Airport – George Bush Intercontinental Airport | 2,567 | 0.7 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 44 | 44 | 88.6% | 0 |
| January 2025 | 37 | 37 | 89.2% | 0 |
| February 2025 | 44 | 44 | 86.4% | 0 |
| March 2025 | 35 | 35 | 88.6% | 0 |
| April 2025 | 30 | 30 | 63.3% | 0 |
| May 2025 | 31 | 31 | 41.9% | 0 |
| June 2025 | 35 | 35 | 42.9% | 0 |
| July 2025 | 61 | 57 | 36.8% | 4 |
| August 2025 | 18 | 17 | 64.7% | 1 |
| September 2025 | 6 | 6 | 83.3% | 0 |
| October 2025 | 30 | 30 | 93.3% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 31 | 31 | 71.0% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 34 | 33 | 72.7% | 1 |
| April 2026 | 26 | 26 | 84.6% | 0 |
| May 2026 | 31 | 31 | 54.8% | 0 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 31 | 31 | 61.3% | 0 |