Flight profile · SkyWest Airlines
OO3251
Santa Ana (SNA) to San Francisco (SFO) · scheduled 6:45 AM – 8:26 AM
How OO3251 performs
380 operations, 2025-03-19 to 2026-06-30.
OO3251 arrived on time 91.6% of the time, against 72.3% for all SNA → SFO flights — this specific departure is 19.3 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 19.8 points better.
Source: US DOT Bureau of Transportation Statistics · 380 operations between 2025-03-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO3251 | 91.6% | 3.95% | -8 min | 2.5% | 380 |
| SkyWest Airlines on SNA → SFO | 71.8% | 1.38% | -3 min | 9.7% | 9,843 |
| All SNA → SFO flights | 72.3% | 1.23% | -4 min | 9.5% | 13,393 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-03-19 to 2026-06-30
Other routes OO3251 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 |
|---|---|---|---|
| DFW→SBN Dallas–Fort Worth to South Bend | 2024-05-06 – 2024-06-04 | 30 | — |
| SBN→DFW South Bend to Dallas–Fort Worth | 2024-05-06 – 2024-06-04 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route OO3251 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
10 min late
against a median of 8 min early
Percentiles over 380 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why OO3251 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
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for OO3251 on SNA → SFO. 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 SNA → SFO
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO5873 | SkyWest Airlines | 68.4% | 4 min early | 632 |
| OO3440 | SkyWest Airlines | 62.1% | 3 min late | 664 |
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 380 records of OO3251 operating SNA → SFO, 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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