Flight profile · United Airlines
UA777
Chicago (ORD) to Las Vegas (LAS) · scheduled 7:45 PM – 10:00 PM
How UA777 performs
1,095 operations, 2023-07-01 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 1,095 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA777 | 76.5% | 0.91% | -5 min | 8.2% | 1,095 |
| United Airlines on ORD → LAS | 81.6% | 0.74% | -8 min | 6.3% | 6,600 |
| All ORD → LAS flights | 76.7% | 1.04% | -6 min | 8.2% | 15,961 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA777 run worse on particular days?
Tuesday is historically the most reliable day and Sunday the least, a gap of 11.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA777 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| TYS→ORD Knoxville/Maryville to Chicago | 2026-04-30 – 2026-04-30 | 1 | — |
| SRQ→ORD Sarasota/Bradenton to Chicago | 2026-03-29 – 2026-03-31 | 3 | — |
| PHX→ORD Phoenix to Chicago | 2026-03-05 – 2026-03-06 | 2 | — |
| SAV→ORD Savannah to Chicago | 2026-02-12 – 2026-03-04 | 20 | — |
| ALB→ORD Albany to Chicago | 2026-02-21 – 2026-02-21 | 1 | — |
| ROC→ORD Rochester to Chicago | 2025-10-26 – 2025-12-01 | 36 | — |
| LGA→ORD New York to Chicago | 2024-10-27 – 2025-08-18 | 20 | — |
| PIT→ORD Pittsburgh to Chicago | 2025-05-22 – 2025-06-25 | 35 | — |
| SFO→PIT San Francisco to Pittsburgh | 2025-05-22 – 2025-06-25 | 29 | — |
| PBI→ORD West Palm Beach to Chicago | 2024-04-01 – 2024-09-30 | 36 | — |
| TPA→ORD Tampa to Chicago | 2024-05-23 – 2024-06-26 | 35 | — |
| RSW→ORD Fort Myers to Chicago | 2023-12-21 – 2024-01-08 | 19 | — |
| ORF→ORD Norfolk to Chicago | 2023-07-01 – 2023-07-31 | 31 | — |
Because the same number has served different journeys, the statistics above describe only the route UA777 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,095 records of UA777 operating ORD → LAS, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.