UA661
UA661 (United Airlines) is a multi-stop service on 18 routes, busiest Newark to Chicago. Of 1,466 departures recorded from October 2024 to July 2026, 72.7% left on time, according to the US BTS.
- On-time departures72.7%of 1,466 flights
- Average delay21.6 min
- July 202681▲ 161.3%vs July 2025
- Cancelled1.2%
- Legs flown under this number18
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 | 92 | 54 | ▼ 41.3% |
| February | 68 | 59 | ▼ 13.2% |
| March | 62 | 83 | ▲ 33.9% |
| April | 75 | 86 | ▲ 14.7% |
| May | 84 | 70 | ▼ 16.7% |
| June | 79 | 60 | ▼ 24.1% |
| July | 31 | 81 | ▲ 161.3% |
| August | 57 | – | – |
| September | 60 | – | – |
| October | 64 | – | in progress |
| November | 58 | – | – |
| December | 76 | – | – |
| Year to date (Jan–Jul) | 491 | 493 | ▲ 0.4% |
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 | 83.5% | 69.8% | ▼ 16.4% |
| February | 77.9% | 80.7% | ▲ 3.5% |
| March | 62.9% | 67.9% | ▲ 7.9% |
| April | 64.9% | 76.7% | ▲ 18.3% |
| May | 63.9% | 75.0% | ▲ 17.4% |
| June | 72.2% | 76.3% | ▲ 5.7% |
| July | 90.3% | 69.3% | ▼ 23.2% |
| August | 71.9% | – | – |
| September | 76.7% | – | – |
| October | 71.9% | – | in progress |
| November | 66.7% | – | – |
| December | 68.4% | – | – |
| Year-to-date average (Jan–Jul) | 73.6% | 73.7% | 0.0% |
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 | 1 | 1 | 0.0% |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 1 | 2 | ▲ 100.0% |
| June | 0 | 1 | – |
| July | 0 | 6 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 14 | ▲ 366.7% |
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 98.8% 1,448
- Cancelled 1.2% 18
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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 75.0% | 0 |
| November 2024 | 55 | 55 | 87.3% | 0 |
| December 2024 | 72 | 72 | 62.5% | 0 |
| January 2025 | 92 | 91 | 83.5% | 1 |
| February 2025 | 68 | 68 | 77.9% | 0 |
| March 2025 | 62 | 62 | 62.9% | 0 |
| April 2025 | 75 | 74 | 64.9% | 1 |
| May 2025 | 84 | 83 | 63.9% | 1 |
| June 2025 | 79 | 79 | 72.2% | 0 |
| July 2025 | 31 | 31 | 90.3% | 0 |
| August 2025 | 57 | 57 | 71.9% | 0 |
| September 2025 | 60 | 60 | 76.7% | 0 |
| October 2025 | 64 | 64 | 71.9% | 0 |
| November 2025 | 58 | 57 | 66.7% | 1 |
| December 2025 | 76 | 76 | 68.4% | 0 |
| January 2026 | 54 | 53 | 69.8% | 1 |
| February 2026 | 59 | 57 | 80.7% | 2 |
| March 2026 | 83 | 81 | 67.9% | 2 |
| April 2026 | 86 | 86 | 76.7% | 0 |
| May 2026 | 70 | 68 | 75.0% | 2 |
| June 2026 | 60 | 59 | 76.3% | 1 |
| July 2026 | 81 | 75 | 69.3% | 6 |