Carrier route record

OOLAS→SJC

SkyWest Airlines · Las Vegas to San Jose

Flights: 202
Period: July 2025 to June 2026
Share of route: 5%
Carriers: 5

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on LAS to SJC lands a B+, 4 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 202 flights, with a median arrival 6 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on LAS to SJC from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

81.2%

Arrivals under 15 minutes late, of 202 completed flights

Avg delay

100 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

Whole route

78.3%

Every carrier on LAS to SJC, 3,844 flights

These figures cover 202 flights between July 2025 and June 2026. Beyond the headline rate, 8.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

SkyWest against every carrier on LAS to SJC

SkyWest flew 202 of the 3,844 flights on LAS to SJC, about 5% of it. Its 81.2% on time is 3 points better than the route as a whole, which runs 78.3%. Ranked by on-time rate it is number three of five carriers on the route, where the range runs from United at 100.0% to Southwest at 77.9%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on LAS to SJC
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlinesthin sample	4	100.0%	—	0.00%	A+
Spirit Airlinesthin sample	198	81.2%	50 min	0.51%	B+
SkyWest Airlines (this page)thin sample	202	81.2%	100 min	0.00%	B+
Frontier Airlinesthin sample	185	80.2%	63 min	1.62%	B
Southwest Airlines	3,255	77.9%	52 min	0.34%	B+

Departure window

When SkyWest runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 202 flights.

There are not enough flights in each departure window to split SkyWest's LAS to SJC record by time of day without the percentages moving on noise. The headline rate of 81.2% is the reliable figure here.

Across the year

SkyWest on LAS to SJC through the year

Jul–Sep 202592 flights81.5%
Oct–Dec 202592 flights84.8%
Jan–Mar 202618 flights—

Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 81.2% on time across 202 flights.

Split by quarter, SkyWest on LAS to SJC logged 92 flights in Jul–Sep 2025, 92 flights in Oct–Dec 2025 and 18 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 81.2% annual figure is the one to use.

Across the week, Monday is the strongest day at 80.0% on time and Tuesday the weakest at 73.3%. 7 points is a smaller lever than departure hour, but it is free.

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. Carrier accounts for 74% of the 3,789 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
74%
National Airspace System
18%
Extreme weather
8%
Late-arriving aircraft
1%

The largest share of delay minutes, 74%, 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 2,790 of the 3,789 delay minutes reported here. The split is drawn from 3,789 reported delay minutes.

Cancellations are rare at 0.00%, below the national 1.81% 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 stage length

What a delay here costs

8.4% 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 an hour and a half, which a normal layover absorbs.

At 386 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 11am–2pm window matters as much as it does.

The return leg runs 80.2% on time across 202 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 202 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 SkyWest on LAS to SJC

Put together: treat all of this as provisional. 202 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 81.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 202 completed flights over 12 months sit behind that.

Where to go next

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