Flight profile · SkyWest Airlines
OO3977
Lexington (LEX) to Detroit (DTW) · scheduled 7:45 AM – 9:30 AM
How OO3977 performs
652 operations, 2024-06-07 to 2026-06-30.
OO3977 arrived on time 88.5% of the time, against 86.0% for all LEX → DTW flights — this specific departure is 2.6 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 2.5 points better.
Source: US DOT Bureau of Transportation Statistics · 652 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO3977 | 88.5% | 1.07% | -12 min | 5.6% | 652 |
| SkyWest Airlines on LEX → DTW | 86.0% | 0.90% | -12 min | 7.4% | 1,443 |
| All LEX → DTW flights | 86.0% | 0.70% | -10 min | 6.6% | 2,426 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes OO3977 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 |
|---|---|---|---|
| DTW→HSV Detroit to Huntsville | 2026-02-14 – 2026-02-14 | 1 | — |
| HSV→DTW Huntsville to Detroit | 2026-02-14 – 2026-02-14 | 1 | — |
| ELM→DTW Elmira/Corning to Detroit | 2025-12-20 – 2026-01-04 | 16 | — |
| ATL→SHV Atlanta to Shreveport | 2024-11-30 – 2024-11-30 | 1 | — |
| SHV→ATL Shreveport to Atlanta | 2024-11-30 – 2024-11-30 | 1 | — |
| ABQ→SLC Albuquerque to Salt Lake City | 2024-09-09 – 2024-10-06 | 28 | — |
| JFK→SYR New York to Syracuse | 2024-05-07 – 2024-06-06 | 31 | — |
| LAX→OAK Los Angeles to Oakland | 2023-09-05 – 2024-05-05 | 216 | 88.0% |
| BOS→JFK Boston to New York | 2023-07-01 – 2023-09-03 | 24 | — |
| JFK→BOS New York to Boston | 2023-07-15 – 2023-09-03 | 16 | — |
Because the same number has served different journeys, the statistics above describe only the route OO3977 currently operates. Blending them would produce an average of two different flights.
Why OO3977 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
Share of the delay minutes US DOT attributed to each cause for OO3977 on LEX → 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 652 records of OO3977 operating LEX → 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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