Flight number record
OO 3359
SkyWest Airlines · San Diego to San Jose
- Route
- SAN → SJC
- Departs
- 08:01
- Flights
- 290
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. When something does go wrong the average delay runs about an hour. That rests on 290 flights, with a median arrival 13 minutes early.
Set against the rest of the country, OO 3359's record is 13 points better than the US average of 77.3%. That gap is worth roughly 130 fewer late arrivals for every thousand flights.
Key figures
On time
90.3%
Arrivals under 15 minutes late, of 289 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
0.34%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 290 flights between September 2025 and August 2026. The median arrival is 13 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.
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Schedule
When OO 3359 flies
OO 3359 flies SAN to SJC without a single fixed slot. Its most common scheduled departure was 08:01, used on 77 of 290 flights, with 07:48 (70 flights) and 08:10 (34 flights) next.
- Departs 08:0177 flights26.6%
- Departs 07:4870 flights24.1%
- Departs 08:1034 flights11.7%
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 08:01 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 3359 runs 6 points better at 90.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 3359 next to SAN to SJC
Every carrier on SAN to SJC combined arrived on time 74.5% of the time across 4,973 flights, so OO 3359 is 16 points ahead of it. SkyWest flew 1,112 flights on the same city pair under all its flight numbers, including this one, and those ran 80.7% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3359thin sample | 290 | 90.3% | 59 min | 0.34% | A+ |
| All SkyWest Airlines on SAN–SJC | 1,112 | 80.7% | 56 min | 1.26% | B |
| All carriers on SAN–SJC | 4,973 | 74.5% | 50 min | 0.88% | C+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | 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 58 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 flights90.0%
- Oct–Dec 202579 flights84.6%
- Jan–Mar 202634 flights91.2%
- Apr–Jun 202685 flights96.5%
- Jul–Sep 202662 flights88.7%
Scale runs 75% to 100%.
By weekday, OO 3359 ranged from 87.2% on Sunday to 95.3% on Wednesday. With about 41 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3359 runs when it is late
OO 3359 often beats the schedule: 125 of 289 completed flights, 43%, arrived 15 minutes or more early. The 28 late arrivals split 11 under half an hour, 9 between 30 and 60 minutes, and 8 an hour or more.
- 15+ min early125 flights43.3%
- Within 15 min136 flights47.1%
- 15–29 min late11 flights3.8%
- 30–59 min late9 flights3.1%
- 1–2 hours late5 flights1.7%
- 2+ hours late3 flights1.0%
Scale runs 0% to 100%.
Share of 289 completed flights by arrival against schedule.
A late pushback is often recovered here: of 28 departures that left 15 minutes late or more, 9 still arrived on time. 9 flights left on time and still arrived late.
The worst days
Worst days for OO 3359
The latest arrival of the period was on 16 July 2026, 3 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 July 2026 | 3 hours 46 minutes | Late-arriving aircraft |
| 5 August 2026 | 2 hours 53 minutes | Late-arriving aircraft |
| 18 November 2025 | 2 hours 47 minutes | Carrier |
| 21 October 2025 | 1 hour 59 minutes | Late-arriving aircraft |
| 9 November 2025 | 1 hour 35 minutes | Late-arriving aircraft |
Delay causes
Why OO 3359 runs late
Late-arriving aircraft accounts for 52% of the 1,658 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 29%Carrier
- 11%Extreme weather
- 7%National Airspace System
Extreme weather accounts for 11% 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 1.9 times the usual weather exposure. The split is drawn from 1,658 delay minutes reported on OO 3359.
Cancellations are rare at 0.34%, 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
Badly late arrivals are rare here: only 2.8% land an hour or more behind schedule, against 8.3% 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 290 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. 290 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: 90.3% on time and 0.34% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SAN to SJC, every carrier and departure
- SJC to SAN, the return direction
- San Diego International (SAN) delay statistics
- Norman Y. Mineta San Jose International (SJC) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
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 ; recomputed monthly. How this data is collected.