Flight number record

OO 4708

SkyWest Airlines · San Francisco to Arcata/Eureka

Route: SFO → ACV
Departs: 09:30
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4708, 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 4708 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 365 flights, with a median arrival 4 minutes early.

On time

74.6%

Arrivals under 15 minutes late, of 347 completed flights

Avg delay

70 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.81%

1 hour+ late

10.7%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. Beyond the headline rate, 10.7% 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 4708 flies

OO 4708 flies SFO to ACV without a single fixed slot. Its most common scheduled departure was 09:30, used on 101 of 365 flights, with 10:15 (41 flights) and 09:26 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:30101 flights27.7%
Departs 10:1541 flights11.2%
Departs 09:2637 flights10.1%

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 09:30 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 4708 runs 10 points worse at 74.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 4708 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 4708 is 2 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 4 points.

OO 4708 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4708	365	74.6%	70 min	0.82%	C+
All SkyWest Airlines on SFO–ACV	1,285	76.4%	91 min	2.72%	B
All carriers on SFO–ACV	1,285	76.4%	91 min	2.72%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4708 quarter by quarter

OO 4708 did not run the same all year. Its best quarter was Oct–Dec 2025 at 83.3% on time and its weakest Apr–Jun 2026 at 64.3%, a swing of 19 points on roughly 91 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 202592 flights80.0%
Oct–Dec 202592 flights83.3%
Jan–Mar 202690 flights70.5%
Apr–Jun 202691 flights64.3%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4708 did best on Thursday at 82.0% on time and worst on Sunday at 64.7%. Each day rests on about 52 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4708 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 6,192 reported delay minutes.

National Airspace System
36%
Carrier
32%
Late-arriving aircraft
17%
Extreme weather
15%

Extreme weather accounts for 15% 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 2.5 times the usual weather exposure. The split is drawn from 6,192 delay minutes reported on OO 4708.

Cancellations are rare at 0.82%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

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. 10.7% 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.

Every one of the 365 flights under OO 4708 in the data flew SFO to ACV. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 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 4708

For a booking, read OO 4708 as 74.6% on time with 0.82% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures