UA400
UA400 (United Airlines) is a multi-stop service on 30 routes, busiest Denver to Anchorage. Of 633 departures recorded from October 2024 to July 2026, 78.4% left on time, according to the US BTS.
- On-time departures78.4%of 633 flights
- Average delay14.1 min
- July 202630▲ 76.5%vs July 2025
- Cancelled0.6%
- Legs flown under this number30
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 | 20 | 31 | ▲ 55.0% |
| February | 24 | 28 | ▲ 16.7% |
| March | 31 | 22 | ▼ 29.0% |
| April | 24 | 30 | ▲ 25.0% |
| May | 31 | 31 | 0.0% |
| June | 28 | 17 | ▼ 39.3% |
| July | 17 | 30 | ▲ 76.5% |
| August | 31 | – | – |
| September | 29 | – | – |
| October | 37 | – | in progress |
| November | 60 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 175 | 189 | ▲ 8.0% |
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 | 70.0% | 70.0% | 0.0% |
| February | 79.2% | 82.1% | ▲ 3.8% |
| March | 63.3% | 90.9% | ▲ 43.5% |
| April | 66.7% | 100.0% | ▲ 50.0% |
| May | 90.3% | 83.9% | ▼ 7.1% |
| June | 92.9% | 94.1% | ▲ 1.4% |
| July | 58.8% | 70.0% | ▲ 19.0% |
| August | 64.5% | – | – |
| September | 72.4% | – | – |
| October | 86.5% | – | in progress |
| November | 89.8% | – | – |
| December | 71.9% | – | – |
| Year-to-date average (Jan–Jul) | 74.5% | 84.4% | ▲ 13.4% |
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 | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 100.0% |
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 99.4% 629
- Cancelled 0.6% 4
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 ANC Denver International Airport – Ted Stevens Anchorage International Airport | 3,863 | 13.5 min | 74.4% | 78 |
| ABQ IAD Albuquerque International Sunport – Washington Dulles International Airport | 2,614 | 1.9 min | 94.2% | 53 |
| ORD ALB Chicago O'Hare International Airport – Albany International Airport | 1,161 | 9.9 min | 80.4% | 51 |
| MTJ EWR Montrose Regional Airport – Newark Liberty International Airport | 2,882 | 26.7 min | 60.5% | 38 |
| SFO LAS San Francisco International Airport – Harry Reid International Airport | 665 | 2.5 min | 91.7% | 37 |
| RDM SFO Roberts Field – San Francisco International Airport | 745 | 14.0 min | 89.2% | 37 |
| JAC EWR Jackson Hole Airport – Newark Liberty International Airport | 3,008 | 22.8 min | 75.0% | 37 |
| SBA SFO Santa Barbara Municipal Airport – San Francisco International Airport | 422 | 8.1 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 30 | 30 | 46.7% | 0 |
| January 2025 | 20 | 20 | 70.0% | 0 |
| February 2025 | 24 | 24 | 79.2% | 0 |
| March 2025 | 31 | 30 | 63.3% | 1 |
| April 2025 | 24 | 24 | 66.7% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 28 | 28 | 92.9% | 0 |
| July 2025 | 17 | 17 | 58.8% | 0 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 29 | 29 | 72.4% | 0 |
| October 2025 | 37 | 37 | 86.5% | 0 |
| November 2025 | 60 | 59 | 89.8% | 1 |
| December 2025 | 32 | 32 | 71.9% | 0 |
| January 2026 | 31 | 30 | 70.0% | 1 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 22 | 22 | 90.9% | 0 |
| April 2026 | 30 | 29 | 100.0% | 1 |
| May 2026 | 31 | 31 | 83.9% | 0 |
| June 2026 | 17 | 17 | 94.1% | 0 |
| July 2026 | 30 | 30 | 70.0% | 0 |