Flight profile · SkyWest Airlines
OO4235
St George (SGU) to Salt Lake City (SLC) · scheduled 6:10 AM – 7:30 AM
How OO4235 performs
1,096 operations, 2023-07-01 to 2026-06-30.
OO4235 arrived on time 98.0% of the time, against 92.3% for all SGU → SLC flights — this specific departure is 5.7 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 5.7 points better.
Source: US DOT Bureau of Transportation Statistics · 1,096 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4235 | 98.0% | 0.00% | -14 min | 1.0% | 1,096 |
| 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 · 2023-07-01 to 2026-06-30
By day of week
Does OO4235 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 3.2 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.
Why OO4235 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 OO4235 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 |
|---|---|---|---|---|
| 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 1,096 records of OO4235 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.