Flight number record

OO 5737

SkyWest Airlines · Fresno to San Francisco

Route: FAT → SFO
Departs: 10:45
Flights: 295
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5737, 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 5737 earns an F+, which is as low as this site's scale goes for a reason. Only 54.2% of flights arrive inside the 15-minute window, 23 points worse than the national rate of 77.6%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 295 flights, with a median arrival 12 minutes late.

The national on-time rate over the same period is 77.6%, so OO 5737 runs 23 points behind the country as a whole. Across a thousand flights that is about 234 extra late arrivals.

On time

54.2%

Arrivals under 15 minutes late, of 295 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

16.6%

National rate is 8.1%

These figures cover 295 flights between July 2025 and June 2026. Beyond the headline rate, 16.6% 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 5737 flies

OO 5737 flies FAT to SFO without a single fixed slot. Its most common scheduled departure was 10:45, used on 45 of 295 flights, with 10:21 (41 flights) and 11:18 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:4545 flights15.3%
Departs 10:2141 flights13.9%
Departs 11:1837 flights12.5%

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 10:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5737 runs 30 points worse at 54.2%. 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 5737 next to FAT to SFO

Every carrier on FAT to SFO combined arrived on time 67.0% of the time across 1,276 flights, so OO 5737 is 13 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 25 points.

OO 5737 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5737thin sample	295	54.2%	75 min	0.00%	F+
All SkyWest Airlines on FAT–SFO	1,276	67.0%	80 min	1.25%	C
All carriers on FAT–SFO	1,276	67.0%	80 min	1.25%	C
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5737 quarter by quarter

OO 5737 did not run the same all year. Its best quarter was Jul–Sep 2025 at 74.4% on time and its weakest Apr–Jun 2026 at 34.1%, a swing of 40 points on roughly 74 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 202543 flights74.4%
Oct–Dec 202576 flights52.6%
Jan–Mar 202685 flights67.1%
Apr–Jun 202691 flights34.1%

Scale runs 25% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5737 did best on Saturday at 67.5% on time and worst on Friday at 42.9%. Each day rests on about 42 flights, so a gap of 25 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5737 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 10,000 reported delay minutes.

Carrier
41%
National Airspace System
39%
Extreme weather
11%
Late-arriving aircraft
9%

The largest share of delay minutes, 41%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,162 of the 10,000 delay minutes reported here. The split is drawn from 10,126 delay minutes reported on OO 5737.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are 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. 16.6% 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 two other city pairs in the data, including ORD to OMA (42) and SUN to ORD (19), but none flew often enough under OO 5737 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to FAT to SFO only.

One caution: this is a thin sample. 295 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 5737

For a booking, OO 5737 is a flight to put a long connection behind. 16.6% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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