UA1131
UA1131 (United Airlines) is a multi-stop service on 18 routes, busiest Denver to San Antonio. Of 745 departures recorded from October 2024 to July 2026, 84.4% left on time, according to the US BTS.
- On-time departures84.4%of 745 flights
- Average delay9.0 min
- July 202630▼ 51.6%vs July 2025
- Cancelled0.9%
- Legs flown under this number18
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 | 30 | ▼ 3.2% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 62 | 31 | ▼ 50.0% |
| June | 60 | 30 | ▼ 50.0% |
| July | 62 | 30 | ▼ 51.6% |
| August | 49 | – | – |
| September | 30 | – | – |
| October | 26 | – | in progress |
| November | 2 | – | – |
| December | 43 | – | – |
| Year to date (Jan–Jul) | 304 | 210 | ▼ 30.9% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 71.0% | 93.1% | ▲ 31.2% |
| February | 92.9% | 78.6% | ▼ 15.4% |
| March | 90.3% | 74.2% | ▼ 17.9% |
| April | 80.0% | 90.0% | ▲ 12.5% |
| May | 80.3% | 93.6% | ▲ 16.5% |
| June | 91.7% | 70.0% | ▼ 23.6% |
| July | 88.7% | 65.5% | ▼ 26.1% |
| August | 93.8% | – | – |
| September | 83.3% | – | – |
| October | 88.5% | – | in progress |
| November | – | – | – |
| December | 71.4% | – | – |
| Year-to-date average (Jan–Jul) | 85.0% | 80.7% | ▼ 5.0% |
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
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 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 99.1% 738
- Cancelled 0.9% 7
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN SAT Denver International Airport – San Antonio International Airport | 1,280 | 5.5 min | 87.1% | 311 |
| IAH MAF George Bush Intercontinental Airport – Midland International Air and Space Port | 689 | 3.2 min | 84.5% | 104 |
| DEN ORD Denver International Airport – Chicago O'Hare International Airport | 1,426 | 19.2 min | 82.1% | 56 |
| IAH LAS George Bush Intercontinental Airport – Harry Reid International Airport | 1,963 | 6.1 min | 86.5% | 37 |
| RNO DEN Reno Tahoe International Airport – Denver International Airport | 1,291 | 4.3 min | 94.4% | 36 |
| ORD DEN Chicago O'Hare International Airport – Denver International Airport | 1,426 | -3.3 min | 91.4% | 35 |
| ORD MSP Chicago O'Hare International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 537 | 38.2 min | 67.7% | 35 |
| IAD IAH Washington Dulles International Airport – George Bush Intercontinental Airport | 1,913 | -2.3 min | 90.6% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 31 | 71.0% | 0 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 62 | 61 | 80.3% | 1 |
| June 2025 | 60 | 60 | 91.7% | 0 |
| July 2025 | 62 | 62 | 88.7% | 0 |
| August 2025 | 49 | 48 | 93.8% | 1 |
| September 2025 | 30 | 30 | 83.3% | 0 |
| October 2025 | 26 | 26 | 88.5% | 0 |
| November 2025 | 2 | 0 | — | 2 |
| December 2025 | 43 | 42 | 71.4% | 1 |
| January 2026 | 30 | 29 | 93.1% | 1 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 31 | 31 | 74.2% | 0 |
| April 2026 | 30 | 30 | 90.0% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 30 | 29 | 65.5% | 1 |