Flight profile · SkyWest Airlines
OO4665
Denver (DEN) to Bismarck (BIS) · scheduled 5:30 PM – 8:13 PM
How OO4665 performs
1,052 operations, 2023-07-01 to 2026-06-30.
OO4665 arrived on time 68.5% of the time, against 77.7% for all DEN → BIS flights — this specific departure is 9.2 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 9.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 1,052 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4665 | 68.5% | 1.71% | -1 min | 13.8% | 1,052 |
| SkyWest Airlines on DEN → BIS | 77.7% | 1.21% | -7 min | 9.4% | 4,138 |
| All DEN → BIS flights | 77.7% | 1.21% | -7 min | 9.4% | 4,138 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does OO4665 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 14.3 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 OO4665 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 |
|---|---|---|---|
| BNA→ORD Nashville to Chicago | 2025-12-02 – 2025-12-17 | 16 | — |
| IAH→OMA Houston to Omaha | 2025-11-27 – 2025-11-27 | 1 | — |
| BOI→LAX Boise to Los Angeles | 2025-03-06 – 2025-03-29 | 24 | — |
| DEN→GSO Denver to Greensboro | 2024-11-28 – 2024-11-28 | 1 | — |
| LAX→FAT Los Angeles to Fresno | 2023-11-23 – 2023-11-23 | 1 | — |
| DEN→JAC Denver to Jackson | 2023-10-22 – 2023-10-22 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route OO4665 currently operates. Blending them would produce an average of two different flights.
Why OO4665 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 OO4665 on DEN → BIS. 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 → BIS
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO4663 | SkyWest Airlines | 82.3% | 8 min early | 1,058 |
| OO4664 | SkyWest Airlines | 80.8% | 8 min early | 968 |
| OO4799 | SkyWest Airlines | 76.6% | 6 min early | 686 |
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 1,052 records of OO4665 operating DEN → BIS, 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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