Flight number record
OO 3755
SkyWest Airlines · Los Angeles to Sacramento
- Route
- LAX → SMF
- Departs
- 09:10
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3755, 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 3755 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 18 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 365 flights, with a median arrival 13 minutes early.
Set against the rest of the country, OO 3755's record is 18 points better than the US average of 77.3%. That gap is worth roughly 175 fewer late arrivals for every thousand flights.
Key figures
On time
94.8%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
2.5%
National rate is 8.3%
These figures cover 365 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 3755 flies
OO 3755 flies LAX to SMF without a single fixed slot. Its most common scheduled departure was 09:10, used on 57 of 365 flights, with 09:15 (55 flights) and 08:45 (41 flights) next.
- Departs 09:1057 flights15.6%
- Departs 09:1555 flights15.1%
- Departs 08:4541 flights11.2%
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 09:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 3755 runs 11 points better at 94.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 3755 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 3755 is 10 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 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3755 | 365 | 94.8% | 84 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 3755 quarter by quarter
Quarter by quarter OO 3755 held fairly steady: 100.0% in Jul–Sep 2025, 94.6% in Oct–Dec 2025, 92.1% in Jan–Mar 2026, 95.6% in Apr–Jun 2026 and 95.2% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights100.0%
- Oct–Dec 202592 flights94.6%
- Jan–Mar 202690 flights92.1%
- Apr–Jun 202691 flights95.6%
- Jul–Sep 202662 flights95.2%
Scale runs 85% to 100%.
By weekday, OO 3755 ranged from 90.4% on Sunday to 98.1% on Tuesday. With about 52 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 3755 runs when it is late
OO 3755 often beats the schedule: 160 of 364 completed flights, 44%, arrived 15 minutes or more early. The 19 late arrivals split 5 under half an hour, 5 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early160 flights44.0%
- Within 15 min185 flights50.8%
- 15–29 min late5 flights1.4%
- 30–59 min late5 flights1.4%
- 1–2 hours late3 flights0.8%
- 2+ hours late6 flights1.6%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
6 of 23 late departures made up the time and arrived on time, 26% of them. Only 2 left on time and still arrived late.
The worst days
Worst days for OO 3755
The latest arrival of the period was on 5 April 2026, 4 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across April, January, March and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 April 2026 | 4 hours 12 minutes | Carrier |
| 17 January 2026 | 3 hours 41 minutes | Extreme weather |
| 18 January 2026 | 3 hours 2 minutes | National Airspace System |
| 15 March 2026 | 2 hours 26 minutes | Carrier |
| 9 November 2025 | 2 hours 11 minutes | Extreme weather |
Delay causes
Why OO 3755 runs late
Carrier accounts for 51% of the 1,604 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Carrier
- 34%Extreme weather
- 14%National Airspace System
Extreme weather accounts for 34% 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 5.7 times the usual weather exposure. The split is drawn from 1,604 delay minutes reported on OO 3755.
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 2.5% 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 one other city pair in the data, including SMF to LAX (236), but none flew often enough under OO 3755 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. 365 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 3755
For a booking, OO 3755 has one of the better records a US domestic flight can show: 94.8% 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 3812 on the same route89.7%
- SkyWest Airlines 3759 on the same route87.7%
- SkyWest Airlines 4908 on the same route78.9%
- SkyWest Airlines 3712 on the same route89.0%
- 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.