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DelayAtlas

Flight number record

OO 4695

SkyWest Airlines · San Francisco to Arcata/Eureka

Route
SFO → ACV
Departs
20:55
Flights
337
Period
July 2025 to June 2026
BGRADE

Historical statistics for July 2025 to June 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 lands a B, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 337 flights, with a median arrival 4 minutes early.

Key figures

On time

76.7%

Arrivals under 15 minutes late, of 317 completed flights

Avg delay

125 min

Across delayed arrivals only, not all flights

Cancelled

2.67%

National rate is 1.81%

1 hour+ late

11.0%

National rate is 8.1%

These figures cover 337 flights between July 2025 and June 2026. Beyond the headline rate, 11.0% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 98 of 337 flights, with 20:59 (94 flights) and 21:20 (45 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

  • Departs 20:5598 flights29.1%
  • Departs 20:5994 flights27.9%
  • Departs 21:2045 flights13.4%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 70.5%, and OO 4695 runs 6 points better at 76.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 4695 next to SFO to ACV

Every carrier on SFO to ACV combined arrived on time 76.4% of the time across 1,285 flights, so OO 4695 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 2 points.

OO 4695 against its route and carrier
Compared withFlightsOn timeAvg delayCancelledGrade
OO 4695thin sample33776.7%125 min2.67%B
All SkyWest Airlines on SFO–ACV1,28576.4%91 min2.72%B
All carriers on SFO–ACV1,28576.4%91 min2.72%B
SkyWest Airlines, whole network852,93579.0%88 min1.77%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 Oct–Dec 2025 at 69.2%, a swing of 19 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 202591 flights75.6%
  • Oct–Dec 202582 flights69.2%
  • Jan–Mar 202690 flights88.6%
  • Apr–Jun 202674 flights71.0%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4695 did best on Thursday at 84.0% on time and worst on Sunday at 68.1%. Each day rests on about 48 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

On-time rate by day of the week76.6Mon78.6Tue82.2Wed84.0Thu70.8Fri76.3Sat68.1Sun
Monday: 76.6 percent on time. Tuesday: 78.6 percent on time. Wednesday: 82.2 percent on time. Thursday: 84.0 percent on time. Friday: 70.8 percent on time. Saturday: 76.3 percent on time. Sunday: 68.1 percent on time

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 9,221 reported delay minutes.

  • Extreme weather
    35%
  • Late-arriving aircraft
    25%
  • National Airspace System
    22%
  • Carrier
    19%

Extreme weather accounts for 35% 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 5.6 times the usual weather exposure. The split is drawn from 9,221 delay minutes reported on OO 4695.

Cancellations run at 2.67%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.0% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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, the cancellation rate is the figure to plan around on OO 4695: 2.67% of its 337 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.

Related

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.