UA777
UA777 (United Airlines) is a multi-stop service on 10 routes, busiest Chicago to Las Vegas. Of 804 departures recorded from October 2024 to July 2026, 75.8% left on time, according to the US BTS.
- On-time departures75.8%of 804 flights
- Average delay16.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number10
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 | 31 | 0.0% |
| February | 28 | 45 | ▲ 60.7% |
| March | 31 | 40 | ▲ 29.0% |
| April | 30 | 31 | ▲ 3.3% |
| May | 48 | 31 | ▼ 35.4% |
| June | 77 | 30 | ▼ 61.0% |
| July | 31 | 31 | 0.0% |
| August | 46 | – | – |
| September | 30 | – | – |
| October | 37 | – | in progress |
| November | 58 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 276 | 239 | ▼ 13.4% |
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 | 71.0% | 87.1% | ▲ 22.7% |
| February | 67.9% | 86.7% | ▲ 27.7% |
| March | 87.1% | 53.9% | ▼ 38.2% |
| April | 83.3% | 87.1% | ▲ 4.5% |
| May | 66.7% | 77.4% | ▲ 16.1% |
| June | 76.6% | 76.7% | ▲ 0.1% |
| July | 83.9% | 83.3% | ▼ 0.6% |
| August | 70.5% | – | – |
| September | 66.7% | – | – |
| October | 73.0% | – | in progress |
| November | 63.2% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 76.6% | 78.9% | ▲ 2.9% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 2 |
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 99.4% 799
- Cancelled 0.6% 5
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD LAS Chicago O'Hare International Airport – Harry Reid International Airport | 2,432 | 16.4 min | 76.2% | 657 |
| ROC ORD Frederick Douglass Greater Rochester International Airport – Chicago O'Hare International Airport | 847 | 31.1 min | 57.1% | 36 |
| PIT ORD Pittsburgh International Airport – Chicago O'Hare International Airport | 662 | 21.3 min | 71.4% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 25 | 25 | 72.0% | 0 |
| November 2024 | 30 | 30 | 100.0% | 0 |
| December 2024 | 31 | 31 | 77.4% | 0 |
| January 2025 | 31 | 31 | 71.0% | 0 |
| February 2025 | 28 | 28 | 67.9% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 48 | 48 | 66.7% | 0 |
| June 2025 | 77 | 77 | 76.6% | 0 |
| July 2025 | 31 | 31 | 83.9% | 0 |
| August 2025 | 46 | 44 | 70.5% | 2 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 37 | 37 | 73.0% | 0 |
| November 2025 | 58 | 57 | 63.2% | 1 |
| December 2025 | 32 | 32 | 75.0% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 45 | 45 | 86.7% | 0 |
| March 2026 | 40 | 39 | 53.9% | 1 |
| April 2026 | 31 | 31 | 87.1% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 30 | 30 | 76.7% | 0 |
| July 2026 | 31 | 30 | 83.3% | 1 |