Flight profile · SkyWest Airlines
OO4231
Kincheloe (CIU) to Detroit (DTW) · scheduled 1:40 PM – 1:15 PM
How OO4231 performs
1,087 operations, 2023-07-02 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 1,087 operations between 2023-07-02 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4231 | 80.5% | 2.58% | -9 min | 10.9% | 1,087 |
| SkyWest Airlines on CIU → DTW | 80.5% | 2.58% | -9 min | 10.9% | 1,087 |
| All CIU → DTW flights | 80.5% | 2.58% | -9 min | 10.9% | 1,087 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-02 to 2026-06-30
By day of week
Does OO4231 run worse on particular days?
Wednesday is historically the most reliable day and Saturday the least, a gap of 14.0 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-02 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Why OO4231 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for OO4231 on CIU → DTW. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 1,087 records of OO4231 operating CIU → DTW, 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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