Flight number record
OO 3883
SkyWest Airlines · Los Angeles to San Jose
- Route
- LAX → SJC
- Departs
- 18:00
- Flights
- 286
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3883, 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 3883 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 55 minutes. That rests on 286 flights, with a median arrival 13 minutes early.
Set against the rest of the country, OO 3883's record is 9 points better than the US average of 77.3%. That gap is worth roughly 91 fewer late arrivals for every thousand flights.
Key figures
On time
86.4%
Arrivals under 15 minutes late, of 286 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
3.8%
National rate is 8.3%
These figures cover 286 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 3883 flies
OO 3883 flies LAX to SJC without a single fixed slot. Its most common scheduled departure was 18:00, used on 60 of 286 flights, with 17:55 (34 flights) next.
- Departs 18:0060 flights21.0%
- Departs 17:5534 flights11.9%
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 18:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 3883 runs 18 points better at 86.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 3883 next to LAX to SJC
Every carrier on LAX to SJC combined arrived on time 85.6% of the time across 4,471 flights, so OO 3883 is about level with it. SkyWest flew 1,805 flights on the same city pair under all its flight numbers, including this one, and those ran 90.7% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3883thin sample | 286 | 86.4% | 55 min | 0.00% | A+ |
| All SkyWest Airlines on LAX–SJC | 1,805 | 90.7% | 58 min | 0.39% | A+ |
| All carriers on LAX–SJC | 4,471 | 85.6% | 53 min | 0.96% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3883 quarter by quarter
OO 3883 did not run the same all year. Its best quarter was Apr–Jun 2026 at 95.0% on time and its weakest Jul–Sep 2026 at 75.0%, a swing of 20 points on roughly 57 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 flights83.3%
- Oct–Dec 202587 flights82.8%
- Jan–Mar 202677 flights89.6%
- Apr–Jun 202660 flights95.0%
- Jul–Sep 202632 flights75.0%
Scale runs 65% to 100%.
By weekday, OO 3883 ranged from 81.4% on Monday to 91.1% on Friday. With about 41 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3883 runs when it is late
OO 3883 often beats the schedule: 108 of 286 completed flights, 38%, arrived 15 minutes or more early. The 39 late arrivals split 15 under half an hour, 13 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early108 flights37.8%
- Within 15 min139 flights48.6%
- 15–29 min late15 flights5.2%
- 30–59 min late13 flights4.5%
- 1–2 hours late7 flights2.4%
- 2+ hours late4 flights1.4%
Scale runs 0% to 100%.
Share of 286 completed flights by arrival against schedule.
11 of 49 late departures made up the time and arrived on time, 22% of them. Only 1 left on time and still arrived late.
The worst days
Worst days for OO 3883
The latest arrival of the period was on 26 December 2025, 4 hours 37 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 December 2025 | 4 hours 37 minutes | National Airspace System |
| 30 July 2026 | 3 hours 22 minutes | Carrier |
| 16 July 2026 | 2 hours 24 minutes | Carrier |
| 19 December 2025 | 2 hours 1 minute | Carrier |
| 18 February 2026 | 1 hour 48 minutes | Extreme weather |
Delay causes
Why OO 3883 runs late
Carrier accounts for 65% of the 2,137 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 22%National Airspace System
- 14%Extreme weather
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 2.3 times the usual weather exposure. The split is drawn from 2,137 delay minutes reported on OO 3883.
Cancellations are rare at 0.00%, below the national 1.89% 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
Badly late arrivals are rare here: only 3.8% 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.
OO 3883 is not only a LAX to SJC flight. It also flew SJC to LAX (271 flights, 90.8% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 286 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SJC to LAXthin sample | 271 | 90.8% | 54 min | 0.00% | A+ |
What to do with this
Booking OO 3883
For a booking, OO 3883 has one of the better records a US domestic flight can show: 86.4% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAX to SJC, every carrier and departure
- SJC to LAX, the return direction
- Los Angeles International (LAX) 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
- Worst months to fly in the US, ranked by the data
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.