UA591
UA591 (United Airlines) is a multi-stop service on 26 routes, busiest Newark to San Antonio. Of 693 departures recorded from October 2024 to July 2026, 85.9% left on time, according to the US BTS.
- On-time departures85.9%of 693 flights
- Average delay5.7 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.4%
- Legs flown under this number26
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 | 30 | 41 | ▲ 36.7% |
| February | 28 | 31 | ▲ 10.7% |
| March | 31 | 31 | 0.0% |
| April | 30 | 27 | ▼ 10.0% |
| May | 28 | 24 | ▼ 14.3% |
| June | 43 | 30 | ▼ 30.2% |
| July | 31 | 31 | 0.0% |
| August | 44 | – | – |
| September | 29 | – | – |
| October | 27 | – | in progress |
| November | 26 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 221 | 215 | ▼ 2.7% |
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 | 83.3% | 76.9% | ▼ 7.7% |
| February | 89.3% | 82.8% | ▼ 7.3% |
| March | 83.9% | 96.8% | ▲ 15.4% |
| April | 90.0% | 96.3% | ▲ 7.0% |
| May | 85.7% | 95.8% | ▲ 11.8% |
| June | 65.1% | 70.0% | ▲ 7.5% |
| July | 82.8% | 73.3% | ▼ 11.4% |
| August | 92.9% | – | – |
| September | 86.2% | – | – |
| October | 96.3% | – | in progress |
| November | 96.2% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.9% | 84.6% | ▲ 2.0% |
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 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 1 | ▼ 50.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 98.6% 683
- Cancelled 1.4% 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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| EWR SAT Newark Liberty International Airport – San Antonio International Airport | 2,522 | 0.5 min | 88.4% | 356 |
| CVG ORD Cincinnati Northern Kentucky International Airport – Chicago O'Hare International Airport | 425 | 3.4 min | 87.0% | 46 |
| EWR CLE Newark Liberty International Airport – Cleveland Hopkins International Airport | 649 | 10.6 min | 89.2% | 37 |
| SAT DEN San Antonio International Airport – Denver International Airport | 1,280 | -4.1 min | 97.2% | 36 |
| EWR ATL Newark Liberty International Airport – Hartsfield Jackson Atlanta International Airport | 1,199 | 19.7 min | 82.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 50 | 50 | 94.0% | 0 |
| December 2024 | 30 | 29 | 86.2% | 1 |
| January 2025 | 30 | 30 | 83.3% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 28 | 28 | 85.7% | 0 |
| June 2025 | 43 | 43 | 65.1% | 0 |
| July 2025 | 31 | 29 | 82.8% | 2 |
| August 2025 | 44 | 42 | 92.9% | 2 |
| September 2025 | 29 | 29 | 86.2% | 0 |
| October 2025 | 27 | 27 | 96.3% | 0 |
| November 2025 | 26 | 26 | 96.2% | 0 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 41 | 39 | 76.9% | 2 |
| February 2026 | 31 | 29 | 82.8% | 2 |
| March 2026 | 31 | 31 | 96.8% | 0 |
| April 2026 | 27 | 27 | 96.3% | 0 |
| May 2026 | 24 | 24 | 95.8% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 30 | 73.3% | 1 |