Flight profile · SkyWest Airlines
OO4770
Denver (DEN) to Grand Junction (GJT) · scheduled 3:50 PM – 5:04 PM
How OO4770 performs
765 operations, 2024-05-23 to 2026-06-30.
OO4770 arrived on time 73.3% of the time, against 78.6% for all DEN → GJT flights — this specific departure is 5.2 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 6.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 765 operations between 2024-05-23 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4770 | 73.3% | 2.09% | -5 min | 10.5% | 765 |
| SkyWest Airlines on DEN → GJT | 79.3% | 1.25% | -7 min | 7.8% | 3,586 |
| All DEN → GJT flights | 78.6% | 0.97% | -6 min | 8.2% | 5,591 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-05-23 to 2026-06-30
Other routes OO4770 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 |
|---|---|---|---|
| GSP→DEN Greenville/Greer/Spartanburg to Denver | 2024-05-05 – 2024-05-22 | 18 | — |
| MCI→ORD Kansas City to Chicago | 2024-03-09 – 2024-05-01 | 42 | — |
| FAT→DEN Fresno to Denver | 2024-02-15 – 2024-03-06 | 21 | — |
| ORD→DTW Chicago to Detroit | 2024-01-09 – 2024-02-14 | 32 | — |
| ORD→MCI Chicago to Kansas City | 2024-01-14 – 2024-02-11 | 5 | — |
| GRB→ORD Green Bay to Chicago | 2023-09-06 – 2024-01-08 | 103 | 87.4% |
| HRL→IAH Harlingen to Houston | 2023-09-29 – 2023-09-29 | 1 | — |
| IAH→AUS Houston to Austin | 2023-08-04 – 2023-09-01 | 6 | — |
| LFT→IAH Lafayette to Houston | 2023-07-04 – 2023-07-31 | 18 | — |
Because the same number has served different journeys, the statistics above describe only the route OO4770 currently operates. Blending them would produce an average of two different flights.
Why OO4770 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for OO4770 on DEN → GJT. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on DEN → GJT
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1714 | United Airlines | 84.2% | 6 min early | 822 |
| OO4704 | SkyWest Airlines | 83.5% | 8 min early | 714 |
| OO5488 | SkyWest Airlines | 82.2% | 8 min early | 898 |
| UA431 | United Airlines | 73.1% | 3 min early | 1,007 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 765 records of OO4770 operating DEN → GJT, 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.