UA537
UA537 (United Airlines) is a multi-stop service on 8 routes, busiest Memphis to Houston. Of 514 departures recorded from December 2024 to July 2026, 90.8% left on time, according to the US BTS.
- On-time departures90.8%of 514 flights
- Average delay2.8 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.2%
- Legs flown under this number8
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 12 | 27 | ▲ 125.0% |
| March | 26 | 31 | ▲ 19.2% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 25 | – | in progress |
| November | – | – | – |
| December | 14 | – | – |
| Year to date (Jan–Jul) | 191 | 210 | ▲ 9.9% |
according to the US BTS · December 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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 93.1% | 93.6% | ▲ 0.5% |
| February | 100.0% | 88.9% | ▼ 11.1% |
| March | 88.5% | 80.0% | ▼ 9.6% |
| April | 86.7% | 96.6% | ▲ 11.4% |
| May | 90.3% | 93.6% | ▲ 3.6% |
| June | 93.1% | 93.3% | ▲ 0.2% |
| July | 83.3% | 96.7% | ▲ 16.0% |
| August | 90.3% | – | – |
| September | 93.3% | – | – |
| October | 84.0% | – | in progress |
| November | – | – | – |
| December | 85.7% | – | – |
| Year-to-date average (Jan–Jul) | 90.7% | 91.8% | ▲ 1.2% |
according to the US BTS · December 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · December 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 2 | ▼ 50.0% |
according to the US BTS · December 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% 508
- Cancelled 1.2% 6
Share of all recorded flights in the period, all legs. · Dec 19, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MEM IAH Frederick W. Smith International Airport – George Bush Intercontinental Airport | 754 | 1.1 min | 91.0% | 169 |
| MAF IAH Midland International Air and Space Port – George Bush Intercontinental Airport | 689 | 4.4 min | 88.4% | 122 |
| RDU IAH Raleigh-Durham International Airport – George Bush Intercontinental Airport | 1,675 | -1.1 min | 96.3% | 56 |
| MFE IAH McAllen Miller International Airport – George Bush Intercontinental Airport | 510 | 6.8 min | 87.5% | 56 |
| ORD IAH Chicago O'Hare International Airport – George Bush Intercontinental Airport | 1,491 | -2.9 min | 97.2% | 36 |
| PHL IAH Philadelphia International Airport – George Bush Intercontinental Airport | 2,130 | -0.3 min | 94.1% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 13 | 13 | 100.0% | 0 |
| January 2025 | 31 | 29 | 93.1% | 2 |
| February 2025 | 12 | 12 | 100.0% | 0 |
| March 2025 | 26 | 26 | 88.5% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 29 | 93.1% | 1 |
| July 2025 | 31 | 30 | 83.3% | 1 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 25 | 25 | 84.0% | 0 |
| December 2025 | 14 | 14 | 85.7% | 0 |
| January 2026 | 31 | 31 | 93.6% | 0 |
| February 2026 | 27 | 27 | 88.9% | 0 |
| March 2026 | 31 | 30 | 80.0% | 1 |
| April 2026 | 30 | 29 | 96.6% | 1 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 30 | 30 | 96.7% | 0 |