Flight profile · SkyWest Airlines
OO4138
Fresno (FAT) to Salt Lake City (SLC) · scheduled 6:00 AM – 8:55 AM
How OO4138 performs
981 operations, 2023-09-05 to 2026-06-30.
OO4138 arrived on time 96.4% of the time, against 93.2% for all FAT → SLC flights — this specific departure is 3.2 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 3.2 points better.
Source: US DOT Bureau of Transportation Statistics · 981 operations between 2023-09-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4138 | 96.4% | 0.20% | -16 min | 2.0% | 981 |
| SkyWest Airlines on FAT → SLC | 93.2% | 0.23% | -13 min | 2.3% | 3,544 |
| All FAT → SLC flights | 93.2% | 0.23% | -13 min | 2.3% | 3,544 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-05 to 2026-06-30
By day of week
Does OO4138 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 4.3 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-05 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes OO4138 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 |
|---|---|---|---|
| BOI→SEA Boise to Seattle | 2023-11-05 – 2023-12-06 | 32 | — |
| DTW→LAN Detroit to Lansing | 2023-10-28 – 2023-11-04 | 5 | — |
| LAN→DTW Lansing to Detroit | 2023-10-28 – 2023-11-04 | 5 | — |
| ATL→CSG Atlanta to Columbus | 2023-11-02 – 2023-11-03 | 2 | — |
| CSG→ATL Columbus to Atlanta | 2023-11-02 – 2023-11-03 | 2 | — |
| DTW→MBS Detroit to Freeland | 2023-07-10 – 2023-09-03 | 56 | — |
Because the same number has served different journeys, the statistics above describe only the route OO4138 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 981 records of OO4138 operating FAT → 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.