Flight number record
OO 4908
SkyWest Airlines · Los Angeles to Sacramento
- Route
- LAX → SMF
- Departs
- 22:23
- Flights
- 326
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4908, 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 4908 lands a B+, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 326 flights, with a median arrival 7 minutes early.
Key figures
On time
78.9%
Arrivals under 15 minutes late, of 323 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
0.61%
National rate is 1.89%
1 hour+ late
6.8%
National rate is 8.3%
These figures cover 326 flights between September 2025 and August 2026. The median arrival is 7 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 4908 flies
OO 4908 flies LAX to SMF without a single fixed slot. Its most common scheduled departure was 22:23, used on 54 of 326 flights, with 21:21 (52 flights) and 21:50 (38 flights) next.
- Departs 22:2354 flights16.6%
- Departs 21:2152 flights16.0%
- Departs 21:5038 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 22:23 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4908 runs 9 points better at 78.9%. 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 4908 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 4908 is 6 points behind 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%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4908thin sample | 326 | 78.9% | 75 min | 0.61% | B+ |
| 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 4908 quarter by quarter
Quarter by quarter OO 4908 held fairly steady: 76.5% in Oct–Dec 2025, 77.0% in Jan–Mar 2026, 77.9% in Apr–Jun 2026 and 83.0% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202521 flights—
- Oct–Dec 202586 flights76.5%
- Jan–Mar 202689 flights77.0%
- Apr–Jun 202677 flights77.9%
- Jul–Sep 202653 flights83.0%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4908 did best on Wednesday at 84.2% on time and worst on Friday at 70.0%. Each day rests on about 47 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4908 runs when it is late
OO 4908 often beats the schedule: 82 of 323 completed flights, 25%, arrived 15 minutes or more early. The 68 late arrivals split 22 under half an hour, 24 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early82 flights25.4%
- Within 15 min173 flights53.6%
- 15–29 min late22 flights6.8%
- 30–59 min late24 flights7.4%
- 1–2 hours late14 flights4.3%
- 2+ hours late8 flights2.5%
Scale runs 0% to 100%.
Share of 323 completed flights by arrival against schedule.
11 of 64 late departures made up the time and arrived on time, 17% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for OO 4908
The latest arrival of the period was on 9 July 2026, 10 hours 32 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 July 2026 | 10 hours 32 minutes | Carrier |
| 18 July 2026 | 9 hours 36 minutes | Carrier |
| 7 March 2026 | 9 hours 3 minutes | Carrier |
| 21 November 2025 | 3 hours 17 minutes | Carrier |
| 2 August 2026 | 2 hours 29 minutes | Carrier |
Delay causes
Why OO 4908 runs late
Carrier accounts for 73% of the 5,075 delay minutes carriers reported here, and the remaining four split what is left.
- 73%Carrier
- 17%Late-arriving aircraft
- 9%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 73%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,699 of the 5,075 delay minutes reported here. The split is drawn from 5,075 delay minutes reported on OO 4908.
Cancellations are rare at 0.61%, 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
6.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The same number turns up on one other city pair in the data, including LAX to RNO (1), but none flew often enough under OO 4908 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. 326 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 4908
For a booking, OO 4908 is one of the weaker ways to fly LAX to SMF: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
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 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
- The best day of the week to fly, and why it is the second lever
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.