UA427
UA427 (United Airlines) is a multi-stop service on 4 routes, busiest San Diego to Newark. Of 628 departures recorded from October 2024 to July 2026, 83.0% left on time, according to the US BTS.
- On-time departures83.0%of 628 flights
- Average delay12.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.6%
- 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 | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 30 | ▼ 3.2% |
| April | 30 | 30 | 0.0% |
| May | 17 | 31 | ▲ 82.4% |
| June | 15 | 30 | ▲ 100.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 183 | 211 | ▲ 15.3% |
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% | 79.3% | ▲ 3.4% |
| February | 78.6% | 80.0% | ▲ 1.8% |
| March | 90.3% | 86.7% | ▼ 4.0% |
| April | 53.3% | 100.0% | ▲ 87.5% |
| May | 93.8% | 90.3% | ▼ 3.7% |
| June | 86.7% | 90.0% | ▲ 3.8% |
| July | 86.7% | 86.7% | 0.0% |
| August | 83.9% | – | – |
| September | 90.0% | – | – |
| October | 93.6% | – | in progress |
| November | 96.7% | – | – |
| December | 60.0% | – | – |
| Year-to-date average (Jan–Jul) | 80.9% | 87.6% | ▲ 8.3% |
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 | 1 | 2 | ▲ 100.0% |
| February | 0 | 3 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 6 | ▲ 100.0% |
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 98.4% 618
- Cancelled 1.6% 10
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN EWR San Diego International Airport – Newark Liberty International Airport | 3,895 | 12.7 min | 83.1% | 625 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 30 | 30 | 66.7% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 30 | 76.7% | 1 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 53.3% | 0 |
| May 2025 | 17 | 16 | 93.8% | 1 |
| June 2025 | 15 | 15 | 86.7% | 0 |
| July 2025 | 31 | 30 | 86.7% | 1 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 30 | 60.0% | 1 |
| January 2026 | 31 | 29 | 79.3% | 2 |
| February 2026 | 28 | 25 | 80.0% | 3 |
| March 2026 | 30 | 30 | 86.7% | 0 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 30 | 86.7% | 1 |