Flight number record

OO 5958

SkyWest Airlines · San Francisco to Fresno

Route: SFO → FAT
Departs: 11:20
Flights: 279
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5958, 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 5958 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 279 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so OO 5958 runs 6 points behind the country as a whole. Across a thousand flights that is about 63 extra late arrivals.

On time

71.3%

Arrivals under 15 minutes late, of 275 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

1.08%

National rate is 1.81%

1 hour+ late

10.9%

National rate is 8.1%

These figures cover 279 flights between July 2025 and June 2026. Beyond the headline rate, 10.9% 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 5958 flies

OO 5958 flies SFO to FAT without a single fixed slot. Its most common scheduled departure was 11:20, used on 85 of 279 flights, with 11:55 (37 flights) and 12:28 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:2085 flights30.5%
Departs 11:5537 flights13.3%
Departs 12:2837 flights13.3%

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 11:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 5958 runs 8 points worse at 71.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5958 next to SFO to FAT

Every carrier on SFO to FAT combined arrived on time 76.4% of the time across 1,276 flights, so OO 5958 is 5 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 8 points.

OO 5958 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5958thin sample	279	71.3%	75 min	1.08%	C
All SkyWest Airlines on SFO–FAT	1,276	76.4%	96 min	1.49%	B
All carriers on SFO–FAT	1,276	76.4%	96 min	1.49%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5958 quarter by quarter

OO 5958 did not run the same all year. Its best quarter was Jul–Sep 2025 at 79.3% on time and its weakest Oct–Dec 2025 at 64.1%, a swing of 15 points on roughly 93 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 flights79.3%
Oct–Dec 202580 flights64.1%
Jan–Mar 202686 flights72.6%
Apr–Jun 202621 flights—

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5958 did best on Saturday at 80.5% on time and worst on Thursday at 63.2%. Each day rests on about 40 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5958 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 5,939 reported delay minutes.

Carrier
34%
National Airspace System
30%
Late-arriving aircraft
29%
Extreme weather
7%

No single cause dominates. carrier at 34%, national airspace system at 30% and late-arriving aircraft at 29% split the 5,939 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around. The split is drawn from 5,939 delay minutes reported on OO 5958.

Cancellations sit at 1.08% against a national 1.81%, which is ordinary. Diversions add another 0.36%.

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. 10.9% 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 three other city pairs in the data, including ORD to STL (32), ORD to TYS (25) and SFO to SBP (1), but none flew often enough under OO 5958 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to FAT only.

One caution: this is a thin sample. 279 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 5958

For a booking, OO 5958 is one of the weaker ways to fly SFO to FAT: 5 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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