Flight number record

OO 4908

SkyWest Airlines · Los Angeles to Sacramento

Route: LAX → SMF
Departs: 22:23
Flights: 328
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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+, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 328 flights, with a median arrival 7 minutes early.

On time

77.5%

Arrivals under 15 minutes late, of 324 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

0.91%

National rate is 1.81%

1 hour+ late

7.7%

National rate is 8.1%

These figures cover 328 flights between July 2025 and June 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.

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 328 flights, with 21:21 (52 flights) and 20:56 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 22:2354 flights16.5%
Departs 21:2152 flights15.9%
Departs 20:5635 flights10.7%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 70.5%, and OO 4908 runs 7 points better at 77.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 4908 next to LAX to SMF

Every carrier on LAX to SMF combined arrived on time 84.6% of the time across 5,634 flights, so OO 4908 is 7 points behind it. SkyWest flew 3,517 flights on the same city pair under all its flight numbers, including this one, and those ran 87.8% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 2 points.

OO 4908 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4908thin sample	328	77.5%	76 min	0.91%	B+
All SkyWest Airlines on LAX–SMF	3,517	87.8%	74 min	0.43%	A+
All carriers on LAX–SMF	5,634	84.6%	63 min	0.41%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4908 quarter by quarter

Quarter by quarter OO 4908 held fairly steady: 78.7% in Jul–Sep 2025, 76.5% in Oct–Dec 2025, 77.0% in Jan–Mar 2026 and 77.9% in Apr–Jun 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202576 flights78.7%
Oct–Dec 202586 flights76.5%
Jan–Mar 202689 flights77.0%
Apr–Jun 202677 flights77.9%

Scale runs 70% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4908 did best on Sunday at 85.4% on time and worst on Friday at 66.7%. Each day rests on about 47 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4908 runs late

One category carries most of the weight here. Carrier accounts for 67% of the 5,550 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
67%
Late-arriving aircraft
18%
National Airspace System
11%
Extreme weather
3%
Security
1%

The largest share of delay minutes, 67%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,718 of the 5,550 delay minutes reported here. The split is drawn from 5,550 delay minutes reported on OO 4908.

Cancellations sit at 0.91% against a national 1.81%, which is ordinary. Diversions add another 0.30%.

Connections and routes

What a delay on this flight costs

7.7% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 (8), 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. 328 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: 7 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.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures