Flight profile · SkyWest Airlines
OO5556
Denver (DEN) to Rapid City (RAP) · scheduled 1:25 PM – 2:45 PM
How OO5556 performs
581 operations, 2024-08-19 to 2026-06-30.
OO5556 arrived on time 79.5% of the time, against 77.2% for all DEN → RAP flights — this specific departure is 2.2 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 1.9 points better.
Source: US DOT Bureau of Transportation Statistics · 581 operations between 2024-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO5556 | 79.5% | 1.38% | -6 min | 7.2% | 581 |
| SkyWest Airlines on DEN → RAP | 77.6% | 1.55% | -6 min | 8.2% | 4,973 |
| All DEN → RAP flights | 77.2% | 1.42% | -5 min | 8.6% | 7,134 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-08-19 to 2026-06-30
Other routes OO5556 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 |
|---|---|---|---|
| ORD→MDT Chicago to Harrisburg | 2026-03-29 – 2026-04-29 | 28 | — |
| TUL→ORD Tulsa to Chicago | 2026-04-04 – 2026-04-25 | 4 | — |
| DSM→DEN Des Moines to Denver | 2026-03-07 – 2026-03-28 | 4 | — |
| LBB→DEN Lubbock to Denver | 2026-03-05 – 2026-03-27 | 20 | — |
| ORD→MKE Chicago to Milwaukee | 2025-12-02 – 2025-12-17 | 16 | — |
| STL→ORD St. Louis to Chicago | 2024-10-05 – 2024-10-26 | 4 | — |
| ALB→ORD Albany to Chicago | 2024-10-01 – 2024-10-25 | 15 | — |
| LFT→IAH Lafayette to Houston | 2024-06-27 – 2024-08-18 | 38 | — |
| PIA→ORD Peoria to Chicago | 2024-05-23 – 2024-06-26 | 35 | — |
| MEM→IAH Memphis to Houston | 2024-05-02 – 2024-05-22 | 15 | — |
| DEN→PSP Denver to Palm Springs | 2024-04-14 – 2024-04-21 | 2 | — |
| PSC→SFO Pasco to San Francisco | 2023-10-29 – 2024-03-06 | 92 | 69.2% |
| IAH→SAT Houston to San Antonio | 2024-02-14 – 2024-02-14 | 1 | — |
| BTR→IAH Baton Rouge to Houston | 2024-01-28 – 2024-01-28 | 1 | — |
| COS→IAH Colorado Springs to Houston | 2023-09-30 – 2023-10-28 | 7 | — |
| ORD→STL Chicago to St. Louis | 2023-10-05 – 2023-10-19 | 2 | — |
| MAF→DEN Midland to Denver | 2023-09-05 – 2023-09-28 | 23 | — |
| DEN→ABQ Denver to Albuquerque | 2023-09-17 – 2023-09-17 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route OO5556 currently operates. Blending them would produce an average of two different flights.
Why OO5556 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 OO5556 on DEN → RAP. 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 → RAP
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO5265 | SkyWest Airlines | 77.1% | 6 min early | 787 |
| OO5303 | SkyWest Airlines | 75.6% | 8 min early | 693 |
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 581 records of OO5556 operating DEN → RAP, 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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