UA663
UA663 (United Airlines) is a multi-stop service on 12 routes, busiest Denver to Medford. Of 814 departures recorded from October 2024 to July 2026, 77.5% left on time, according to the US BTS.
- On-time departures77.5%of 814 flights
- Average delay14.5 min
- July 202692▲ 196.8%vs July 2025
- Cancelled0.9%
- Legs flown under this number12
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 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 18 | 41 | ▲ 127.8% |
| June | 30 | 62 | ▲ 106.7% |
| July | 31 | 92 | ▲ 196.8% |
| August | 31 | – | – |
| September | 36 | – | – |
| October | 62 | – | in progress |
| November | 58 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 199 | 315 | ▲ 58.3% |
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 | 90.0% | 93.6% | ▲ 3.9% |
| February | 96.4% | 71.4% | ▼ 25.9% |
| March | 80.7% | 93.6% | ▲ 16.0% |
| April | 86.7% | 93.3% | ▲ 7.7% |
| May | 50.0% | 65.9% | ▲ 31.7% |
| June | 60.0% | 71.0% | ▲ 18.3% |
| July | 36.7% | 69.0% | ▲ 88.1% |
| August | 54.8% | – | – |
| September | 77.8% | – | – |
| October | 80.7% | – | in progress |
| November | 84.5% | – | – |
| December | 78.1% | – | – |
| Year-to-date average (Jan–Jul) | 71.5% | 79.7% | ▲ 11.4% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 5 | ▲ 400.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
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% 807
- Cancelled 0.9% 7
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN MFR Denver International Airport – Rogue Valley International-Medford Airport | 1,547 | 19.2 min | 71.3% | 375 |
| CVG DEN Cincinnati Northern Kentucky International Airport – Denver International Airport | 1,716 | 3.2 min | 90.5% | 201 |
| MCO EWR Orlando International Airport – Newark Liberty International Airport | 1,511 | 3.4 min | 91.4% | 37 |
| EWR DEN Newark Liberty International Airport – Denver International Airport | 2,576 | 52.6 min | 62.9% | 37 |
| TPA DEN Tampa International Airport – Denver International Airport | 2,423 | 5.4 min | 77.8% | 36 |
| BNA SFO Nashville International Airport – San Francisco International Airport | 3,161 | 18.1 min | 58.8% | 34 |
| SAV DEN Savannah Hilton Head International Airport – Denver International Airport | 2,272 | 11.8 min | 77.4% | 31 |
| SJC DEN Mineta San Jose International Airport – Denver International Airport | 1,522 | 11.8 min | 83.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 96.7% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 30 | 90.0% | 1 |
| February 2025 | 28 | 28 | 96.4% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 18 | 18 | 50.0% | 0 |
| June 2025 | 30 | 30 | 60.0% | 0 |
| July 2025 | 31 | 30 | 36.7% | 1 |
| August 2025 | 31 | 31 | 54.8% | 0 |
| September 2025 | 36 | 36 | 77.8% | 0 |
| October 2025 | 62 | 62 | 80.7% | 0 |
| November 2025 | 58 | 58 | 84.5% | 0 |
| December 2025 | 32 | 32 | 78.1% | 0 |
| January 2026 | 31 | 31 | 93.6% | 0 |
| February 2026 | 28 | 28 | 71.4% | 0 |
| March 2026 | 31 | 31 | 93.6% | 0 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 41 | 41 | 65.9% | 0 |
| June 2026 | 62 | 62 | 71.0% | 0 |
| July 2026 | 92 | 87 | 69.0% | 5 |