UA646
UA646 (United Airlines) is a multi-stop service on 14 routes, busiest Eagle to Chicago. Of 478 departures recorded from October 2024 to May 2026, 82.0% left on time, according to the US BTS.
- On-time departures82.0%of 478 flights
- Average delay9.4 min
- May 202620▲ 33.3%vs May 2025
- Cancelled0.2%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 26 | ▲ 4.0% |
| February | 28 | 36 | ▲ 28.6% |
| March | 57 | 33 | ▼ 42.1% |
| April | 51 | 30 | ▼ 41.2% |
| May | 15 | 20 | ▲ 33.3% |
| June | – | – | – |
| July | – | – | – |
| August | 13 | – | – |
| September | 30 | – | – |
| October | 37 | – | in progress |
| November | 60 | – | – |
| December | 2 | – | – |
| Year to date (Jan–May) | 176 | 145 | ▼ 17.6% |
according to the US BTS · October 2024 → May 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 84.0% | 76.9% | ▼ 8.4% |
| February | 71.4% | 86.1% | ▲ 20.6% |
| March | 64.9% | 93.9% | ▲ 44.7% |
| April | 82.4% | 96.7% | ▲ 17.4% |
| May | 66.7% | 95.0% | ▲ 42.5% |
| June | – | – | – |
| July | – | – | – |
| August | 84.6% | – | – |
| September | 76.7% | – | – |
| October | 78.4% | – | in progress |
| November | 91.5% | – | – |
| December | 50.0% | – | – |
| Year-to-date average (Jan–May) | 73.9% | 89.7% | ▲ 21.5% |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 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 | – | – | – |
| July | – | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–May) | 0 | 0 |
according to the US BTS · October 2024 → May 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 99.8% 477
- Cancelled 0.2% 1
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 20, 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 |
|---|---|---|---|---|
| EGE ORD Eagle County Regional Airport – Chicago O'Hare International Airport | 1,618 | 12.3 min | 79.3% | 82 |
| SLC SFO Salt Lake City International Airport – San Francisco International Airport | 962 | 14.3 min | 75.0% | 68 |
| MCO IAD Orlando International Airport – Washington Dulles International Airport | 1,222 | -4.6 min | 96.2% | 53 |
| MSY SFO Louis Armstrong New Orleans International Airport – San Francisco International Airport | 3,069 | 7.2 min | 92.5% | 40 |
| PDX IAH Portland International Airport – George Bush Intercontinental Airport | 2,934 | -3.6 min | 97.3% | 37 |
| IAH ORD George Bush Intercontinental Airport – Chicago O'Hare International Airport | 1,491 | 6.8 min | 86.1% | 37 |
| GRR DEN Gerald R. Ford International Airport – Denver International Airport | 1,629 | 9.6 min | 77.8% | 36 |
| IAD MCO Washington Dulles International Airport – Orlando International Airport | 1,222 | 14.4 min | 78.1% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 86.7% | 0 |
| January 2025 | 25 | 25 | 84.0% | 0 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 57 | 57 | 64.9% | 0 |
| April 2025 | 51 | 51 | 82.4% | 0 |
| May 2025 | 15 | 15 | 66.7% | 0 |
| August 2025 | 13 | 13 | 84.6% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 37 | 37 | 78.4% | 0 |
| November 2025 | 60 | 59 | 91.5% | 1 |
| December 2025 | 2 | 2 | 50.0% | 0 |
| January 2026 | 26 | 26 | 76.9% | 0 |
| February 2026 | 36 | 36 | 86.1% | 0 |
| March 2026 | 33 | 33 | 93.9% | 0 |
| April 2026 | 30 | 30 | 96.7% | 0 |
| May 2026 | 20 | 20 | 95.0% | 0 |