UA1811
UA1811 (United Airlines) is a multi-stop service on 9 routes, busiest Denver to Chicago. Of 1,157 departures recorded from October 2024 to July 2026, 82.9% left on time, according to the US BTS.
- On-time departures82.9%of 1,157 flights
- Average delay10.4 min
- July 202657▼ 8.1%vs July 2025
- Cancelled0.8%
- Legs flown under this number9
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 | 36 | 53 | ▲ 47.2% |
| February | 42 | 48 | ▲ 14.3% |
| March | 37 | 60 | ▲ 62.2% |
| April | 60 | 60 | 0.0% |
| May | 41 | 58 | ▲ 41.5% |
| June | 76 | 56 | ▼ 26.3% |
| July | 62 | 57 | ▼ 8.1% |
| August | 62 | – | – |
| September | 54 | – | – |
| October | 37 | – | in progress |
| November | 58 | – | – |
| December | 61 | – | – |
| Year to date (Jan–Jul) | 354 | 392 | ▲ 10.7% |
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 | 80.6% | 80.4% | ▼ 0.2% |
| February | 85.7% | 89.4% | ▲ 4.3% |
| March | 80.6% | 81.0% | ▲ 0.6% |
| April | 81.7% | 81.4% | ▼ 0.4% |
| May | 85.4% | 93.1% | ▲ 9.1% |
| June | 88.2% | 91.1% | ▲ 3.3% |
| July | 72.6% | 83.9% | ▲ 15.6% |
| August | 80.7% | – | – |
| September | 92.6% | – | – |
| October | 86.5% | – | in progress |
| November | 86.0% | – | – |
| December | 72.1% | – | – |
| Year-to-date average (Jan–Jul) | 82.1% | 85.7% | ▲ 4.5% |
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 | 1 | – |
| March | 1 | 2 | ▲ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 99.2% 1,148
- Cancelled 0.8% 9
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN ORD Denver International Airport – Chicago O'Hare International Airport | 1,426 | 9.9 min | 86.9% | 313 |
| ORD MSP Chicago O'Hare International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 537 | 14.6 min | 77.2% | 290 |
| ORD MCO Chicago O'Hare International Airport – Orlando International Airport | 1,620 | 7.1 min | 81.5% | 230 |
| PHL ORD Philadelphia International Airport – Chicago O'Hare International Airport | 1,088 | 3.2 min | 88.6% | 207 |
| RSW ORD Southwest Florida International Airport – Chicago O'Hare International Airport | 1,807 | -6.5 min | 97.3% | 37 |
| MSP EWR Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Newark Liberty International Airport | 1,619 | 42.3 min | 64.5% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 87.5% | 0 |
| November 2024 | 54 | 54 | 68.5% | 0 |
| December 2024 | 45 | 45 | 77.8% | 0 |
| January 2025 | 36 | 36 | 80.6% | 0 |
| February 2025 | 42 | 42 | 85.7% | 0 |
| March 2025 | 37 | 36 | 80.6% | 1 |
| April 2025 | 60 | 60 | 81.7% | 0 |
| May 2025 | 41 | 41 | 85.4% | 0 |
| June 2025 | 76 | 76 | 88.2% | 0 |
| July 2025 | 62 | 62 | 72.6% | 0 |
| August 2025 | 62 | 62 | 80.7% | 0 |
| September 2025 | 54 | 54 | 92.6% | 0 |
| October 2025 | 37 | 37 | 86.5% | 0 |
| November 2025 | 58 | 57 | 86.0% | 1 |
| December 2025 | 61 | 61 | 72.1% | 0 |
| January 2026 | 53 | 51 | 80.4% | 2 |
| February 2026 | 48 | 47 | 89.4% | 1 |
| March 2026 | 60 | 58 | 81.0% | 2 |
| April 2026 | 60 | 59 | 81.4% | 1 |
| May 2026 | 58 | 58 | 93.1% | 0 |
| June 2026 | 56 | 56 | 91.1% | 0 |
| July 2026 | 57 | 56 | 83.9% | 1 |