Flight profile · SkyWest Airlines
OO4237
St George (SGU) to Salt Lake City (SLC) · scheduled 9:00 AM – 10:15 AM
How OO4237 performs
409 operations, 2025-03-02 to 2026-06-30.
OO4237 arrived on time 95.1% of the time, against 92.3% for all SGU → SLC flights — this specific departure is 2.8 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 2.8 points better.
Source: US DOT Bureau of Transportation Statistics · 409 operations between 2025-03-02 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4237 | 95.1% | 0.00% | -11 min | 2.9% | 409 |
| SkyWest Airlines on SGU → SLC | 92.3% | 0.07% | -13 min | 2.7% | 4,550 |
| All SGU → SLC flights | 92.3% | 0.07% | -13 min | 2.7% | 4,550 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-03-02 to 2026-06-30
Other routes OO4237 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 |
|---|---|---|---|
| MSP→XWA Minneapolis to Williston | 2024-12-21 – 2024-12-28 | 3 | — |
| XWA→MSP Williston to Minneapolis | 2024-12-21 – 2024-12-28 | 3 | — |
| BTM→SLC Butte to Salt Lake City | 2023-07-01 – 2024-07-07 | 349 | 93.1% |
| SLC→BTM Salt Lake City to Butte | 2023-07-01 – 2024-07-07 | 349 | 91.4% |
Because the same number has served different journeys, the statistics above describe only the route OO4237 currently operates. Blending them would produce an average of two different flights.
Why OO4237 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for OO4237 on SGU → SLC. 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 SGU → SLC
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO4235 | SkyWest Airlines | 98.0% | 14 min early | 1,096 |
| OO4308 | SkyWest Airlines | 91.3% | 13 min early | 715 |
| OO4253 | SkyWest Airlines | 91.2% | 12 min early | 983 |
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 409 records of OO4237 operating SGU → SLC, 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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