UA1660
UA1660 (United Airlines) is a multi-stop service on 19 routes, busiest Portland to San Francisco. Of 749 departures recorded from October 2024 to July 2026, 83.6% left on time, according to the US BTS.
- On-time departures83.6%of 749 flights
- Average delay9.7 min
- July 202682▲ 46.4%vs July 2025
- Cancelled1.3%
- Legs flown under this number19
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 | 25 | 22 | ▼ 12.0% |
| February | 28 | 27 | ▼ 3.6% |
| March | 7 | 7 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 39 | ▲ 25.8% |
| June | 57 | 56 | ▼ 1.8% |
| July | 56 | 82 | ▲ 46.4% |
| August | 64 | – | – |
| September | 35 | – | – |
| October | 52 | – | in progress |
| November | 30 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 234 | 263 | ▲ 12.4% |
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 | 80.0% | 90.9% | ▲ 13.6% |
| February | 67.9% | 96.0% | ▲ 41.5% |
| March | 85.7% | 100.0% | ▲ 16.7% |
| April | 96.7% | 83.3% | ▼ 13.8% |
| May | 90.3% | 79.5% | ▼ 12.0% |
| June | 87.5% | 87.5% | 0.0% |
| July | 58.2% | 89.9% | ▲ 54.5% |
| August | 66.1% | – | – |
| September | 88.6% | – | – |
| October | 96.2% | – | in progress |
| November | 82.8% | – | – |
| December | 82.4% | – | – |
| Year-to-date average (Jan–Jul) | 80.9% | 89.6% | ▲ 10.7% |
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 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 3 | ▲ 200.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
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 98.7% 739
- Cancelled 1.3% 10
Share of all recorded flights in the period, all legs. · Oct 13, 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 | 12 | 12 | 83.3% | 0 |
| November 2024 | 24 | 24 | 91.7% | 0 |
| December 2024 | 18 | 18 | 88.9% | 0 |
| January 2025 | 25 | 25 | 80.0% | 0 |
| February 2025 | 28 | 28 | 67.9% | 0 |
| March 2025 | 7 | 7 | 85.7% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 57 | 56 | 87.5% | 1 |
| July 2025 | 56 | 55 | 58.2% | 1 |
| August 2025 | 64 | 62 | 66.1% | 2 |
| September 2025 | 35 | 35 | 88.6% | 0 |
| October 2025 | 52 | 52 | 96.2% | 0 |
| November 2025 | 30 | 29 | 82.8% | 1 |
| December 2025 | 17 | 17 | 82.4% | 0 |
| January 2026 | 22 | 22 | 90.9% | 0 |
| February 2026 | 27 | 25 | 96.0% | 2 |
| March 2026 | 7 | 7 | 100.0% | 0 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 39 | 39 | 79.5% | 0 |
| June 2026 | 56 | 56 | 87.5% | 0 |
| July 2026 | 82 | 79 | 89.9% | 3 |