UA2135
UA2135 (United Airlines) is a multi-stop service on 14 routes, busiest Seattle to Houston. Of 1,218 departures recorded from October 2024 to July 2026, 83.3% left on time, according to the US BTS.
- On-time departures83.3%of 1,218 flights
- Average delay11.4 min
- July 202661▲ 3.4%vs July 2025
- Cancelled0.6%
- Legs flown under this number14
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 | 31 | 62 | ▲ 100.0% |
| February | 28 | 54 | ▲ 92.9% |
| March | 33 | 60 | ▲ 81.8% |
| April | 60 | 60 | 0.0% |
| May | 61 | 73 | ▲ 19.7% |
| June | 34 | 84 | ▲ 147.1% |
| July | 59 | 61 | ▲ 3.4% |
| August | 72 | – | – |
| September | 90 | – | – |
| October | 87 | – | in progress |
| November | 54 | – | – |
| December | 61 | – | – |
| Year to date (Jan–Jul) | 306 | 454 | ▲ 48.4% |
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 | 96.6% | 91.9% | ▼ 4.8% |
| February | 92.9% | 92.6% | ▼ 0.3% |
| March | 97.0% | 87.7% | ▼ 9.5% |
| April | 88.3% | 95.0% | ▲ 7.6% |
| May | 82.0% | 75.3% | ▼ 8.1% |
| June | 57.6% | 75.0% | ▲ 30.3% |
| July | 79.7% | 80.0% | ▲ 0.4% |
| August | 80.6% | – | – |
| September | 82.2% | – | – |
| October | 79.3% | – | in progress |
| November | 77.8% | – | – |
| December | 82.0% | – | – |
| Year-to-date average (Jan–Jul) | 84.8% | 85.4% | ▲ 0.6% |
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 | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 3 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 4 | ▲ 33.3% |
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% 1,211
- Cancelled 0.6% 7
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
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 82.4% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 47 | 47 | 85.1% | 0 |
| January 2025 | 31 | 29 | 96.6% | 2 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 33 | 33 | 97.0% | 0 |
| April 2025 | 60 | 60 | 88.3% | 0 |
| May 2025 | 61 | 61 | 82.0% | 0 |
| June 2025 | 34 | 33 | 57.6% | 1 |
| July 2025 | 59 | 59 | 79.7% | 0 |
| August 2025 | 72 | 72 | 80.6% | 0 |
| September 2025 | 90 | 90 | 82.2% | 0 |
| October 2025 | 87 | 87 | 79.3% | 0 |
| November 2025 | 54 | 54 | 77.8% | 0 |
| December 2025 | 61 | 61 | 82.0% | 0 |
| January 2026 | 62 | 62 | 91.9% | 0 |
| February 2026 | 54 | 54 | 92.6% | 0 |
| March 2026 | 60 | 57 | 87.7% | 3 |
| April 2026 | 60 | 60 | 95.0% | 0 |
| May 2026 | 73 | 73 | 75.3% | 0 |
| June 2026 | 84 | 84 | 75.0% | 0 |
| July 2026 | 61 | 60 | 80.0% | 1 |