Flight number record
OO 4695
SkyWest Airlines · San Francisco to Arcata/Eureka
- Route
- SFO → ACV
- Departs
- 20:55
- Flights
- 337
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4695, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 4695 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land about 2.1 hours behind schedule. That rests on 337 flights, with a median arrival 6 minutes early.
The national on-time rate over the same period is 77.3%, so OO 4695 runs 5 points behind the country as a whole. Across a thousand flights that is about 45 extra late arrivals.
Key figures
On time
72.8%
Arrivals under 15 minutes late, of 323 completed flights
Avg delay
127 min
Across delayed arrivals only, not all flights
Cancelled
2.37%
National rate is 1.89%
1 hour+ late
14.2%
National rate is 8.3%
These figures cover 337 flights between September 2025 and August 2026. Beyond the headline rate, 14.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4695 flies
OO 4695 flies SFO to ACV without a single fixed slot. Its most common scheduled departure was 20:55, used on 110 of 337 flights, with 20:59 (46 flights) and 21:20 (45 flights) next.
- Departs 20:55110 flights32.6%
- Departs 20:5946 flights13.6%
- Departs 21:2045 flights13.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 20:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4695 runs 3 points better at 72.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 4695 next to SFO to ACV
Every carrier on SFO to ACV combined arrived on time 73.3% of the time across 1,293 flights, so OO 4695 is about level with it. SkyWest flew 1,272 flights on the same city pair under all its flight numbers, including this one, and those ran 73.5% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4695thin sample | 337 | 72.8% | 127 min | 2.37% | C |
| All SkyWest Airlines on SFO–ACV | 1,272 | 73.5% | 93 min | 2.52% | C |
| All carriers on SFO–ACV | 1,293 | 73.3% | 92 min | 2.47% | C |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4695 quarter by quarter
OO 4695 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.6% on time and its weakest Jul–Sep 2026 at 56.7%, a swing of 32 points on roughly 84 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights—
- Oct–Dec 202582 flights69.2%
- Jan–Mar 202690 flights88.6%
- Apr–Jun 202674 flights71.0%
- Jul–Sep 202661 flights56.7%
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4695 did best on Wednesday at 82.2% on time and worst on Sunday at 60.4%. Each day rests on about 48 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4695 runs when it is late
OO 4695 often beats the schedule: 114 of 323 completed flights, 35%, arrived 15 minutes or more early. When OO 4695 is late it tends to be very late: 46 of its 88 late arrivals were an hour or more behind, and 20 were two hours or more.
- 15+ min early114 flights35.3%
- Within 15 min121 flights37.5%
- 15–29 min late18 flights5.6%
- 30–59 min late24 flights7.4%
- 1–2 hours late26 flights8.0%
- 2+ hours late20 flights6.2%
Scale runs 0% to 100%.
Share of 323 completed flights by arrival against schedule.
32 of 114 late departures made up the time and arrived on time, 28% of them. Only 6 left on time and still arrived late.
The worst days
Worst days for OO 4695
The latest arrival of the period was on 5 August 2026, 15 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as extreme weather.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 August 2026 | 15 hours 22 minutes | Carrier |
| 2 September 2025 | 13 hours 33 minutes | Extreme weather |
| 6 April 2026 | 12 hours 12 minutes | Carrier |
| 9 September 2025 | 10 hours 47 minutes | Extreme weather |
| 19 July 2026 | 10 hours 13 minutes | Extreme weather |
Delay causes
Why OO 4695 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 11,000 reported delay minutes.
- 29%Extreme weather
- 26%National Airspace System
- 23%Carrier
- 21%Late-arriving aircraft
Extreme weather accounts for 29% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.9 times the usual weather exposure. The split is drawn from 11,174 delay minutes reported on OO 4695.
Cancellations sit at 2.37% against a national 1.89%, which is ordinary. Diversions add another 1.78%.
Connections and routes
What a delay on this flight costs
14.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on five other city pairs in the data, including LAS to LAX (8), LAX to MTJ (5) and IAH to MKE (1), but none flew often enough under OO 4695 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to ACV only.
One caution: this is a thin sample. 337 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking OO 4695
For a booking, OO 4695 is a flight to put a long connection behind. 14.2% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- SFO to ACV, every carrier and departure
- ACV to SFO, the return direction
- SkyWest Airlines 4708 on the same route70.5%
- SkyWest Airlines 5480 on the same route71.9%
- San Francisco International (SFO) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.