UA1998
UA1998 (United Airlines) is a multi-stop service on 18 routes, busiest Portland to San Francisco. Of 799 departures recorded from October 2024 to July 2026, 82.7% left on time, according to the US BTS.
- On-time departures82.7%of 799 flights
- Average delay9.1 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.1%
- 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 | 78 | 24 | ▼ 69.2% |
| February | 64 | 26 | ▼ 59.4% |
| March | 54 | 31 | ▼ 42.6% |
| April | 30 | 30 | 0.0% |
| May | 38 | 34 | ▼ 10.5% |
| June | 52 | 30 | ▼ 42.3% |
| July | 31 | 31 | 0.0% |
| August | 27 | – | – |
| September | 20 | – | – |
| October | 20 | – | in progress |
| November | 21 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 347 | 206 | ▼ 40.6% |
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 | 89.7% | 69.6% | ▼ 22.5% |
| February | 87.5% | 76.9% | ▼ 12.1% |
| March | 88.9% | 90.0% | ▲ 1.2% |
| April | 83.3% | 96.6% | ▲ 15.9% |
| May | 78.4% | 81.8% | ▲ 4.4% |
| June | 90.4% | 90.0% | ▼ 0.4% |
| July | 71.0% | 55.6% | ▼ 21.7% |
| August | 77.8% | – | – |
| September | 80.0% | – | – |
| October | 80.0% | – | in progress |
| November | 85.7% | – | – |
| December | 67.7% | – | – |
| Year-to-date average (Jan–Jul) | 84.2% | 80.1% | ▼ 4.9% |
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 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 1 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 0 | 4 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 8 | ▲ 700.0% |
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 98.9% 790
- Cancelled 1.1% 9
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 87.5% | 0 |
| November 2024 | 60 | 60 | 81.7% | 0 |
| December 2024 | 27 | 27 | 74.1% | 0 |
| January 2025 | 78 | 78 | 89.7% | 0 |
| February 2025 | 64 | 64 | 87.5% | 0 |
| March 2025 | 54 | 54 | 88.9% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 38 | 37 | 78.4% | 1 |
| June 2025 | 52 | 52 | 90.4% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 27 | 27 | 77.8% | 0 |
| September 2025 | 20 | 20 | 80.0% | 0 |
| October 2025 | 20 | 20 | 80.0% | 0 |
| November 2025 | 21 | 21 | 85.7% | 0 |
| December 2025 | 31 | 31 | 67.7% | 0 |
| January 2026 | 24 | 23 | 69.6% | 1 |
| February 2026 | 26 | 26 | 76.9% | 0 |
| March 2026 | 31 | 30 | 90.0% | 1 |
| April 2026 | 30 | 29 | 96.6% | 1 |
| May 2026 | 34 | 33 | 81.8% | 1 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 27 | 55.6% | 4 |