Flight number record
OO 3712
SkyWest Airlines · Los Angeles to Sacramento
- Route
- LAX → SMF
- Departs
- 17:35
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3712, 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 3712 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 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 255 flights, with a median arrival 14 minutes early.
Set against the rest of the country, OO 3712's record is 12 points better than the US average of 77.3%. That gap is worth roughly 117 fewer late arrivals for every thousand flights.
Key figures
On time
89.0%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 14 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 3712 flies
OO 3712 flies LAX to SMF without a single fixed slot. Its most common scheduled departure was 17:35, used on 43 of 255 flights, with 17:45 (36 flights) and 16:23 (31 flights) next.
- Departs 17:3543 flights16.9%
- Departs 17:4536 flights14.1%
- Departs 16:2331 flights12.2%
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 17:35 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 3712 runs 21 points better at 89.0%. 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 3712 next to LAX to SMF
Every carrier on LAX to SMF combined arrived on time 84.8% of the time across 5,708 flights, so OO 3712 is 4 points ahead of it. SkyWest flew 3,559 flights on the same city pair under all its flight numbers, including this one, and those ran 87.7% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3712thin sample | 255 | 89.0% | 48 min | 0.00% | A+ |
| All SkyWest Airlines on LAX–SMF | 3,559 | 87.7% | 76 min | 0.37% | A+ |
| All carriers on LAX–SMF | 5,708 | 84.8% | 65 min | 0.39% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3712 quarter by quarter
Quarter by quarter OO 3712 held fairly steady: 85.6% in Jan–Mar 2026, 87.9% in Apr–Jun 2026 and 95.2% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights85.6%
- Apr–Jun 202691 flights87.9%
- Jul–Sep 202662 flights95.2%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 3712 ranged from 83.8% on Saturday to 94.4% on Wednesday. With about 36 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3712 runs when it is late
OO 3712 often beats the schedule: 121 of 255 completed flights, 47%, arrived 15 minutes or more early. The 28 late arrivals split 9 under half an hour, 11 between 30 and 60 minutes, and 8 an hour or more.
- 15+ min early121 flights47.5%
- Within 15 min106 flights41.6%
- 15–29 min late9 flights3.5%
- 30–59 min late11 flights4.3%
- 1–2 hours late7 flights2.7%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
A late pushback is often recovered here: of 39 departures that left 15 minutes late or more, 12 still arrived on time. Only 1 left on time and still arrived late.
The worst days
Worst days for OO 3712
The latest arrival of the period was on 27 December 2025, 2 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 December 2025 | 2 hours 22 minutes | Carrier |
| 8 April 2026 | 1 hour 55 minutes | Carrier |
| 2 May 2026 | 1 hour 34 minutes | Carrier |
| 19 February 2026 | 1 hour 14 minutes | Extreme weather |
| 13 March 2026 | 1 hour 14 minutes | Extreme weather |
Delay causes
Why OO 3712 runs late
Carrier accounts for 74% of the 1,335 delay minutes carriers reported here, and the remaining four split what is left.
- 74%Carrier
- 25%Extreme weather
- 1%National Airspace System
Extreme weather accounts for 25% 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 4.1 times the usual weather exposure. The split is drawn from 1,335 delay minutes reported on OO 3712.
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 3.1% 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.
The same number turns up on three other city pairs in the data, including SMF to LAX (179), BOI to SEA (110) and SEA to BOI (110), but none flew often enough under OO 3712 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to SMF only.
One caution: this is a thin sample. 255 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 3712
For a booking, OO 3712 has one of the better records a US domestic flight can show: 89.0% 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 SMF, every carrier and departure
- SMF to LAX, the return direction
- SkyWest Airlines 3755 on the same route94.8%
- SkyWest Airlines 3812 on the same route89.7%
- SkyWest Airlines 3759 on the same route87.7%
- SkyWest Airlines 4908 on the same route78.9%
- Los Angeles International (LAX) delay statistics
- Sacramento International (SMF) 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.