Flight profile · SkyWest Airlines
OO4738
Bismarck (BIS) to Denver (DEN) · scheduled 6:00 AM – 7:05 AM
How OO4738 performs
719 operations, 2023-10-29 to 2026-06-30.
OO4738 arrived on time 87.5% of the time, against 78.5% for all BIS → DEN flights — this specific departure is 9.1 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 9.1 points better.
Source: US DOT Bureau of Transportation Statistics · 719 operations between 2023-10-29 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4738 | 87.5% | 0.70% | -19 min | 5.6% | 719 |
| SkyWest Airlines on BIS → DEN | 78.5% | 1.06% | -10 min | 10.0% | 4,137 |
| All BIS → DEN flights | 78.5% | 1.06% | -10 min | 10.0% | 4,137 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30
Other routes OO4738 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 |
|---|---|---|---|
| IDA→DEN Idaho Falls to Denver | 2026-02-04 – 2026-02-04 | 1 | — |
| DEN→OMA Denver to Omaha | 2025-11-28 – 2025-11-28 | 1 | — |
| GRR→ORD Grand Rapids to Chicago | 2025-07-05 – 2025-07-05 | 1 | — |
| CID→DEN Cedar Rapids to Denver | 2024-11-29 – 2024-11-29 | 1 | — |
| ASE→DEN Aspen to Denver | 2024-08-01 – 2024-08-18 | 18 | — |
| MDT→ORD Harrisburg to Chicago | 2024-07-05 – 2024-07-05 | 1 | — |
| BOI→DEN Boise to Denver | 2024-05-23 – 2024-05-23 | 1 | — |
| FAT→DEN Fresno to Denver | 2024-02-15 – 2024-05-22 | 98 | 94.8% |
| MCI→SFO Kansas City to San Francisco | 2024-01-10 – 2024-02-14 | 36 | — |
| DEN→OKC Denver to Oklahoma City | 2024-01-09 – 2024-01-09 | 1 | — |
| ORD→MDT Chicago to Harrisburg | 2023-12-21 – 2024-01-08 | 19 | — |
| CAE→ORD Columbia to Chicago | 2023-12-01 – 2023-12-20 | 20 | — |
| LWS→DEN Lewiston to Denver | 2023-11-24 – 2023-11-24 | 1 | — |
| IAH→LIT Houston to Little Rock | 2023-09-29 – 2023-10-28 | 30 | — |
| MFR→SFO Medford to San Francisco | 2023-07-01 – 2023-09-28 | 90 | 95.6% |
Because the same number has served different journeys, the statistics above describe only the route OO4738 currently operates. Blending them would produce an average of two different flights.
Why OO4738 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
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 OO4738 on BIS → DEN. 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 BIS → DEN
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO4694 | SkyWest Airlines | 86.0% | 18 min early | 1,092 |
| OO4710 | SkyWest Airlines | 75.5% | 2 min early | 1,063 |
| OO4642 | SkyWest Airlines | 65.1% | 1 min late | 904 |
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 719 records of OO4738 operating BIS → DEN, 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.