UA621
UA621 (United Airlines) is a multi-stop service on 4 routes, busiest Albuquerque to Denver. Of 674 departures recorded from October 2024 to July 2026, 91.5% left on time, according to the US BTS.
- On-time departures91.5%of 674 flights
- Average delay2.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number4
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 | 30 | 31 | ▲ 3.3% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 51 | ▲ 64.5% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 211 | 232 | ▲ 10.0% |
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 | 76.7% | 96.8% | ▲ 26.2% |
| February | 96.4% | 96.4% | 0.0% |
| March | 90.0% | 96.8% | ▲ 7.5% |
| April | 90.0% | 89.7% | ▼ 0.4% |
| May | 87.1% | 92.2% | ▲ 5.8% |
| June | 89.7% | 100.0% | ▲ 11.5% |
| July | 90.0% | 93.6% | ▲ 3.9% |
| August | 90.3% | – | – |
| September | 96.7% | – | – |
| October | 87.1% | – | in progress |
| November | 96.7% | – | – |
| December | 93.6% | – | – |
| Year-to-date average (Jan–Jul) | 88.6% | 95.0% | ▲ 7.3% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 1 | ▼ 66.7% |
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 99.4% 670
- 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ABQ DEN Albuquerque International Sunport – Denver International Airport | 563 | 1.6 min | 93.0% | 534 |
| DEN CLE Denver International Airport – Cleveland Hopkins International Airport | 1,928 | 6.7 min | 86.7% | 105 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 28 | 28 | 89.3% | 0 |
| January 2025 | 30 | 30 | 76.7% | 0 |
| February 2025 | 28 | 28 | 96.4% | 0 |
| March 2025 | 31 | 30 | 90.0% | 1 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 30 | 29 | 89.7% | 1 |
| July 2025 | 31 | 30 | 90.0% | 1 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 93.6% | 0 |
| January 2026 | 31 | 31 | 96.8% | 0 |
| February 2026 | 28 | 28 | 96.4% | 0 |
| March 2026 | 31 | 31 | 96.8% | 0 |
| April 2026 | 30 | 29 | 89.7% | 1 |
| May 2026 | 51 | 51 | 92.2% | 0 |
| June 2026 | 30 | 30 | 100.0% | 0 |
| July 2026 | 31 | 31 | 93.6% | 0 |