Flight number record

OO 5313

SkyWest Airlines · Arcata/Eureka to San Francisco

Route: ACV → SFO
Departs: 06:00
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5313, 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 5313 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 77.6%. The late ones land close to two hours behind schedule. That rests on 364 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so OO 5313 runs 5 points behind the country as a whole. Across a thousand flights that is about 54 extra late arrivals.

On time

72.2%

Arrivals under 15 minutes late, of 356 completed flights

Avg delay

108 min

Across delayed arrivals only, not all flights

Cancelled

1.92%

National rate is 1.81%

1 hour+ late

10.7%

National rate is 8.1%

These figures cover 364 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 5313 flies

OO 5313 flies ACV to SFO without a single fixed slot. Its most common scheduled departure was 06:00, used on 99 of 364 flights, with 05:15 (49 flights) and 07:16 (44 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:0099 flights27.2%
Departs 05:1549 flights13.5%
Departs 07:1644 flights12.1%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5313 runs 17 points worse at 72.2%. 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 5313 next to ACV to SFO

Every carrier on ACV to SFO combined arrived on time 63.8% of the time across 1,283 flights, so OO 5313 is 8 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 7 points.

OO 5313 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5313thin sample	364	72.2%	108 min	1.92%	C
All SkyWest Airlines on ACV–SFO	1,283	63.8%	87 min	2.96%	D
All carriers on ACV–SFO	1,283	63.8%	87 min	2.96%	D
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5313 quarter by quarter

OO 5313 did not run the same all year. Its best quarter was Apr–Jun 2026 at 86.0% on time and its weakest Oct–Dec 2025 at 55.6%, 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 202592 flights72.5%
Oct–Dec 202591 flights55.6%
Jan–Mar 202690 flights75.3%
Apr–Jun 202691 flights86.0%

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

By weekday, OO 5313 did best on Saturday at 84.3% on time and worst on Wednesday at 65.4%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5313 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.

Carrier
38%
Extreme weather
36%
Late-arriving aircraft
13%
National Airspace System
13%

Extreme weather accounts for 36% 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 5.8 times the usual weather exposure. The split is drawn from 10,711 delay minutes reported on OO 5313.

Cancellations sit at 1.92% against a national 1.81%, which is ordinary. Diversions add another 0.27%.

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.

The same number turns up on one other city pair in the data, including FWA to ORD (1), but none flew often enough under OO 5313 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ACV to SFO only.

One caution: this is a thin sample. 364 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 5313

For a booking, read OO 5313 as 72.2% on time with 1.92% cancelled over 364 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