Flight number record

OO 4708

SkyWest Airlines · San Francisco to Arcata/Eureka

Route: SFO → ACV
Departs: 10:15
Flights: 365
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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+. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 365 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.3%, so OO 4708 runs 7 points behind the country as a whole. Across a thousand flights that is about 68 extra late arrivals.

On time

70.5%

Arrivals under 15 minutes late, of 353 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.89%

1 hour+ late

11.3%

National rate is 8.3%

These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Schedule

When OO 4708 flies

OO 4708 flies SFO to ACV without a single fixed slot. Its most common scheduled departure was 10:15, used on 75 of 365 flights, with 09:30 (70 flights) next.

Departs 10:1575 flights20.5%
Departs 09:3070 flights19.2%

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 10:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 4708 runs 13 points worse at 70.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Against the route

OO 4708 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 4708 is 3 points behind 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 8 points.

OO 4708 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4708	365	70.5%	69 min	0.55%	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 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 Jul–Sep 2026 at 53.2%, a swing of 30 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 202530 flights—
Oct–Dec 202592 flights83.3%
Jan–Mar 202690 flights70.5%
Apr–Jun 202691 flights64.3%
Jul–Sep 202662 flights53.2%

Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4708 ranged from 67.3% on Wednesday to 72.5% on Thursday. With about 52 flights behind each day, a spread of 5 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late OO 4708 runs when it is late

The 104 late arrivals split 27 under half an hour, 37 between 30 and 60 minutes, and 40 an hour or more.

15+ min early83 flights23.5%
Within 15 min166 flights47.0%
15–29 min late27 flights7.6%
30–59 min late37 flights10.5%
1–2 hours late24 flights6.8%
2+ hours late16 flights4.5%

Scale runs 0% to 100%.

Share of 353 completed flights by arrival against schedule.

16 of 108 late departures made up the time and arrived on time, 15% of them. 12 flights left on time and still arrived late.

The worst days

Worst days for OO 4708

The latest arrival of the period was on 20 April 2026, 5 hours 10 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across April, July, February, June and December, with no single month standing out.

The latest arrivals of OO 4708 in the period
Date	Arrived late by	Largest filed cause
20 April 2026	5 hours 10 minutes	National Airspace System
5 July 2026	4 hours 58 minutes	Late-arriving aircraft
18 February 2026	4 hours 54 minutes	Carrier
22 June 2026	4 hours 41 minutes	National Airspace System
13 December 2025	4 hours 12 minutes	Late-arriving aircraft

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 7,146 reported delay minutes.

National Airspace System
41%
Carrier
25%
Late-arriving aircraft
21%
Extreme weather
13%

Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 7,146 delay minutes reported on OO 4708.

Cancellations are rare at 0.55%, below the national 1.89% 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

11.3% 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.

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 70.5% on time with 0.55% 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures