Flight number record

OO 3359

SkyWest Airlines · San Diego to San Jose

Route: SAN → SJC
Departs: 08:10
Flights: 283
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3359, 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 3359 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 283 flights, with a median arrival 11 minutes early.

Set against the rest of the country, OO 3359's record is 13 points better than the US average of 77.6%. That gap is worth roughly 132 fewer late arrivals for every thousand flights.

On time

90.8%

Arrivals under 15 minutes late, of 282 completed flights

Avg delay

52 min

Across delayed arrivals only, not all flights

Cancelled

0.35%

National rate is 1.81%

1 hour+ late

2.1%

National rate is 8.1%

These figures cover 283 flights between July 2025 and June 2026. The median arrival is 11 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When OO 3359 flies

OO 3359 flies SAN to SJC without a single fixed slot. Its most common scheduled departure was 08:10, used on 77 of 283 flights, with 08:01 (77 flights) and 08:03 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:1077 flights27.2%
Departs 08:0177 flights27.2%
Departs 08:0332 flights11.3%

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 08:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 3359 runs 7 points better at 90.8%. 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 3359 next to SAN to SJC

Every carrier on SAN to SJC combined arrived on time 77.6% of the time across 4,953 flights, so OO 3359 is 13 points ahead of it. SkyWest flew 1,140 flights on the same city pair under all its flight numbers, including this one, and those ran 82.9% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 12 points.

OO 3359 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3359thin sample	283	90.8%	52 min	0.35%	A+
All SkyWest Airlines on SAN–SJC	1,140	82.9%	54 min	1.14%	B
All carriers on SAN–SJC	4,953	77.6%	50 min	0.87%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3359 quarter by quarter

OO 3359 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.5% on time and its weakest Oct–Dec 2025 at 84.6%, a swing of 12 points on roughly 71 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 202585 flights90.6%
Oct–Dec 202579 flights84.6%
Jan–Mar 202634 flights91.2%
Apr–Jun 202685 flights96.5%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3359 did best on Wednesday at 97.7% on time and worst on Friday at 83.0%. Each day rests on about 40 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 3359 runs late

One category carries most of the weight here. Carrier accounts for 46% of the 1,363 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
46%
Late-arriving aircraft
32%
Extreme weather
14%
National Airspace System
9%

Extreme weather accounts for 14% 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 2.2 times the usual weather exposure. The split is drawn from 1,363 delay minutes reported on OO 3359.

Cancellations are rare at 0.35%, 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

Badly late arrivals are rare here: only 2.1% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

Every one of the 283 flights under OO 3359 in the data flew SAN to SJC. 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. 283 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 3359

For a booking, OO 3359 has one of the better records a US domestic flight can show: 90.8% on time and 0.35% cancelled. That is a base rate, not a promise about any single 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