Flight profile · SkyWest Airlines
OO4635
Grand Junction (GJT) to Denver (DEN) · scheduled 3:15 PM – 4:40 PM
How OO4635 performs
945 operations, 2023-07-01 to 2026-06-30.
OO4635 arrived on time 64.5% of the time, against 78.4% for all GJT → DEN flights — this specific departure is 13.9 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 11.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 945 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4635 | 64.5% | 1.48% | 3 min | 15.6% | 945 |
| SkyWest Airlines on GJT → DEN | 75.7% | 1.59% | -6 min | 10.3% | 3,585 |
| All GJT → DEN flights | 78.4% | 1.23% | -8 min | 8.4% | 5,590 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does OO4635 run worse on particular days?
Sunday is historically the most reliable day and Thursday the least, a gap of 9.3 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 OO4635 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 |
|---|---|---|---|
| DEN→GSO Denver to Greensboro | 2025-11-27 – 2025-11-27 | 1 | — |
| DEN→ATW Denver to Appleton | 2024-11-28 – 2024-11-28 | 1 | — |
| ABQ→IAH Albuquerque to Houston | 2024-05-02 – 2024-05-22 | 21 | — |
| ALB→ORD Albany to Chicago | 2024-03-31 – 2024-05-01 | 32 | — |
| CVG→ORD Cincinnati / Covington to Chicago | 2024-03-09 – 2024-03-30 | 7 | — |
| ABQ→SFO Albuquerque to San Francisco | 2024-01-09 – 2024-03-29 | 54 | — |
| ASE→ORD Aspen to Chicago | 2024-02-15 – 2024-03-06 | 21 | — |
| DEN→AMA Denver to Amarillo | 2023-11-23 – 2023-11-23 | 1 | — |
| DTW→IAH Detroit to Houston | 2023-10-14 – 2023-10-15 | 2 | — |
| IAH→DTW Houston to Detroit | 2023-09-09 – 2023-09-24 | 6 | — |
| ELP→DEN El Paso to Denver | 2023-08-23 – 2023-08-23 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route OO4635 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 945 records of OO4635 operating GJT → DEN, 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.