Flight profile · SkyWest Airlines
OO3494
San Francisco (SFO) to Santa Ana (SNA) · scheduled 3:42 PM – 5:20 PM
How OO3494 performs
636 operations, 2024-01-08 to 2026-06-30.
OO3494 arrived on time 75.9% of the time, against 80.7% for all SFO → SNA flights — this specific departure is 4.8 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 4.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 636 operations between 2024-01-08 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO3494 | 75.9% | 0.31% | -4 min | 7.1% | 636 |
| SkyWest Airlines on SFO → SNA | 80.1% | 1.30% | -5 min | 5.8% | 9,781 |
| All SFO → SNA flights | 80.7% | 1.12% | -6 min | 5.7% | 13,328 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-08 to 2026-06-30
Other routes OO3494 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 |
|---|---|---|---|
| SNA→SFO Santa Ana to San Francisco | 2024-01-08 – 2026-05-12 | 478 | 67.0% |
| SJC→SNA San Jose to Santa Ana | 2024-05-23 – 2026-04-20 | 2 | — |
| BOI→PDX Boise to Portland | 2024-10-27 – 2025-04-21 | 157 | 78.1% |
| PDX→BOI Portland to Boise | 2025-01-06 – 2025-02-10 | 26 | — |
| SBP→SEA San Luis Obispo to Seattle | 2023-12-14 – 2024-01-07 | 25 | — |
| SEA→SBP Seattle to San Luis Obispo | 2023-12-14 – 2024-01-07 | 25 | — |
| PDX→SLC Portland to Salt Lake City | 2023-11-23 – 2023-11-23 | 1 | — |
| PSP→SFO Palm Springs to San Francisco | 2023-11-17 – 2023-11-17 | 1 | — |
| SFO→PSP San Francisco to Palm Springs | 2023-11-17 – 2023-11-17 | 1 | — |
| SFO→LAX San Francisco to Los Angeles | 2023-11-16 – 2023-11-16 | 1 | — |
| SAN→SEA San Diego to Seattle | 2023-11-07 – 2023-11-14 | 2 | — |
| SEA→SAN Seattle to San Diego | 2023-11-07 – 2023-11-14 | 2 | — |
| AUS→SAN Austin to San Diego | 2023-10-07 – 2023-11-11 | 6 | — |
| SAN→AUS San Diego to Austin | 2023-10-07 – 2023-11-11 | 6 | — |
| SEA→SFO Seattle to San Francisco | 2023-10-19 – 2023-10-19 | 1 | — |
| SFO→SAN San Francisco to San Diego | 2023-09-06 – 2023-09-30 | 25 | — |
| JAC→SFO Jackson to San Francisco | 2023-07-01 – 2023-09-03 | 29 | — |
| SFO→JAC San Francisco to Jackson | 2023-07-01 – 2023-09-03 | 29 | — |
Because the same number has served different journeys, the statistics above describe only the route OO3494 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.
47 min late
against a median of 3 min early
Percentiles over 636 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why OO3494 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for OO3494 on SFO → SNA. 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 SFO → SNA
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO5440 | SkyWest Airlines | 79.1% | 7 min early | 888 |
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 636 records of OO3494 operating SFO → SNA, 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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