Flight profile · SkyWest Airlines
OO5585
Denver (DEN) to Casper (CPR) · scheduled 5:55 PM – 7:15 PM
How OO5585 performs
94 operations, 2026-03-29 to 2026-06-30.
OO5585 arrived on time 62.8% of the time, against 76.7% for all DEN → CPR flights — this specific departure is 14.0 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 14.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 94 operations between 2026-03-29 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO5585 | 62.8% | 0.00% | 5 min | 17.0% | 94 |
| SkyWest Airlines on DEN → CPR | 76.7% | 1.13% | -7 min | 9.0% | 5,509 |
| All DEN → CPR flights | 76.7% | 1.13% | -7 min | 9.0% | 5,509 |
Source: FlyerIntel analysis of US DOT BTS data · 2026-03-29 to 2026-06-30
Other routes OO5585 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 |
|---|---|---|---|
| HSV→ORD Huntsville to Chicago | 2026-03-06 – 2026-03-28 | 14 | — |
| ORD→GRB Chicago to Green Bay | 2026-02-12 – 2026-02-27 | 10 | — |
| ORD→SYR Chicago to Syracuse | 2026-01-06 – 2026-01-23 | 18 | — |
| PDX→SFO Portland to San Francisco | 2025-12-20 – 2026-01-03 | 3 | — |
| DEN→XWA Denver to Williston | 2025-12-02 – 2025-12-17 | 14 | — |
| PSP→DEN Palm Springs to Denver | 2025-10-28 – 2025-11-29 | 9 | — |
| GRR→ORD Grand Rapids to Chicago | 2025-09-26 – 2025-10-24 | 6 | — |
| LAX→SLC Los Angeles to Salt Lake City | 2025-08-20 – 2025-09-24 | 31 | — |
| SUN→LAX Hailey to Los Angeles | 2025-08-19 – 2025-08-19 | 1 | — |
| ORD→ATW Chicago to Appleton | 2025-05-22 – 2025-08-18 | 73 | — |
| SFO→SEA San Francisco to Seattle | 2025-06-28 – 2025-07-27 | 10 | — |
| DEN→OKC Denver to Oklahoma City | 2025-03-30 – 2025-05-21 | 53 | — |
| SGF→ORD Springfield to Chicago | 2023-07-01 – 2025-03-29 | 614 | 80.7% |
| ORD→MCI Chicago to Kansas City | 2023-12-20 – 2023-12-20 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route OO5585 currently operates. Blending them would produce an average of two different flights.
Why OO5585 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
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 OO5585 on DEN → CPR. 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 → CPR
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO5743 | SkyWest Airlines | 83.9% | 9 min early | 725 |
| OO4797 | SkyWest Airlines | 81.3% | 7 min early | 788 |
| OO5294 | SkyWest Airlines | 75.1% | 5 min early | 809 |
| OO5802 | SkyWest Airlines | 69.3% | 5 min early | 697 |
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 94 records of OO5585 operating DEN → CPR, 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.
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