UA1939
UA1939 (United Airlines) is a multi-stop service on 20 routes, busiest Los Angeles to Newark. Of 650 departures recorded from October 2024 to July 2026, 81.2% left on time, according to the US BTS.
- On-time departures81.2%of 650 flights
- Average delay10.0 min
- July 202617▼ 67.9%vs July 2025
- Cancelled1.2%
- Legs flown under this number20
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 5 | ▼ 83.9% |
| February | 44 | 18 | ▼ 59.1% |
| March | 35 | 32 | ▼ 8.6% |
| April | 30 | 35 | ▲ 16.7% |
| May | 30 | 29 | ▼ 3.3% |
| June | 33 | 26 | ▼ 21.2% |
| July | 53 | 17 | ▼ 67.9% |
| August | 44 | – | – |
| September | 35 | – | – |
| October | 51 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 256 | 162 | ▼ 36.7% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
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 | 77.4% | 40.0% | ▼ 48.3% |
| February | 95.5% | 93.8% | ▼ 1.8% |
| March | 80.0% | 67.7% | ▼ 15.3% |
| April | 93.3% | 82.9% | ▼ 11.2% |
| May | 86.7% | 89.3% | ▲ 3.0% |
| June | 84.9% | 78.3% | ▼ 7.8% |
| July | 86.8% | 76.5% | ▼ 11.9% |
| August | 75.0% | – | – |
| September | 85.7% | – | – |
| October | 84.0% | – | in progress |
| November | 60.0% | – | – |
| December | 74.2% | – | – |
| Year-to-date average (Jan–Jul) | 86.4% | 75.5% | ▼ 12.6% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 3 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 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% 642
- Cancelled 1.2% 8
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX EWR Los Angeles International Airport – Newark Liberty International Airport | 3,941 | 18.0 min | 73.7% | 194 |
| BWI SFO Baltimore/Washington International Thurgood Marshall Airport – San Francisco International Airport | 3,944 | 7.4 min | 89.6% | 67 |
| SFO SLC San Francisco International Airport – Salt Lake City International Airport | 962 | 8.7 min | 72.2% | 54 |
| MCI DEN Kansas City International Airport – Denver International Airport | 855 | 3.5 min | 91.9% | 37 |
| IAH LAX George Bush Intercontinental Airport – Los Angeles International Airport | 2,215 | 1.3 min | 93.8% | 32 |
| SFO IND San Francisco International Airport – Indianapolis International Airport | 3,120 | 2.8 min | 90.0% | 30 |
| ORD EWR Chicago O'Hare International Airport – Newark Liberty International Airport | 1,154 | -1.7 min | 92.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 29 | 29 | 96.6% | 0 |
| December 2024 | 12 | 12 | 16.7% | 0 |
| January 2025 | 31 | 31 | 77.4% | 0 |
| February 2025 | 44 | 44 | 95.5% | 0 |
| March 2025 | 35 | 35 | 80.0% | 0 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 30 | 30 | 86.7% | 0 |
| June 2025 | 33 | 33 | 84.9% | 0 |
| July 2025 | 53 | 53 | 86.8% | 0 |
| August 2025 | 44 | 44 | 75.0% | 0 |
| September 2025 | 35 | 35 | 85.7% | 0 |
| October 2025 | 51 | 50 | 84.0% | 1 |
| November 2025 | 30 | 30 | 60.0% | 0 |
| December 2025 | 31 | 31 | 74.2% | 0 |
| January 2026 | 5 | 5 | 40.0% | 0 |
| February 2026 | 18 | 16 | 93.8% | 2 |
| March 2026 | 32 | 31 | 67.7% | 1 |
| April 2026 | 35 | 35 | 82.9% | 0 |
| May 2026 | 29 | 28 | 89.3% | 1 |
| June 2026 | 26 | 23 | 78.3% | 3 |
| July 2026 | 17 | 17 | 76.5% | 0 |