Carrier route record

OOLAS→LAX

SkyWest Airlines · Las Vegas to Los Angeles

Flights: 312
Period: July 2025 to June 2026
Share of route: 4%
Carriers: 8

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

SkyWest on LAS to LAX earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 6 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 312 flights. The strongest carrier on the route with a full sample, Spirit Airlines, flew 646 at 87.3% on time.

Spirit Airlines is the most reliable of the six carriers covered here at 87.3% on time across 646 flights.

On time

84.0%

Arrivals under 15 minutes late, of 307 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

1.60%

National rate is 1.81%

Whole route

78.8%

Every carrier on LAS to LAX, 8,325 flights

These figures cover 312 flights between July 2025 and June 2026. The median arrival is 6 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.

Carrier by carrier

SkyWest against every carrier on LAS to LAX

SkyWest flew 312 of the 8,325 flights on LAS to LAX, about 4% of it. Its 84.0% on time is 5 points better than the route as a whole, which runs 78.8%. Ranked by on-time rate it is number three of eight carriers on the route, where the range runs from Spirit at 87.3% to Southwest at 68.2%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. Spirit Airlines arrives on time 87.3% of the time; Southwest Airlines manages 68.2%. Sample sizes sit next to every figure, because a two-point gap across 2,386 flights means less than a ten-point one.

On-time performance by carrier on LAS to LAX
Airline	Flights	On time	Avg delay	Cancelled	Grade
Spirit Airlines	646	87.3%	62 min	0.93%	A+
United Airlines	1,574	86.2%	55 min	0.70%	A+
SkyWest Airlines (this page)thin sample	312	84.0%	66 min	1.60%	B
Delta Air Lines	1,737	84.0%	72 min	0.92%	B+
Frontier Airlines	593	80.6%	57 min	0.17%	B+
American Airlines	1,060	75.3%	93 min	0.94%	B+
Alaska Airlinesthin sample	17	70.6%	30 min	0.00%	C+
Southwest Airlines	2,386	68.2%	47 min	0.38%	C+

The spread between Spirit and Southwest is 19 points, wide enough that it should decide the booking. On a hundred trips that is 19 more arrivals inside the on-time window.

Departure window

When SkyWest runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 12 points, against 19 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am38 flights89.5%
8am–11am49 flights87.8%
11am–2pm35 flights80.0%
2pm–5pm45 flights77.8%
5pm–8pm95 flights87.4%
8pm–5am50 flights78.0%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 89.5% of the time, against 77.8% for the afternoon window. That is 12 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 95 flights scheduled in it.

Across the year

SkyWest on LAS to LAX through the year

Jul–Sep 202565 flights78.5%
Oct–Dec 202589 flights82.1%
Jan–Mar 202661 flights88.5%
Apr–Jun 202697 flights86.6%

Scale runs 70% to 95%. 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 84.0% on time across 312 flights.

SkyWest on LAS to LAX did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.5% on time and its weakest Jul–Sep 2025 at 78.5%, a swing of 10 points on roughly 78 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Wednesday is the strongest day at 92.2% on time and Sunday the weakest at 75.0%. 17 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. Late-arriving aircraft accounts for 47% of the 3,246 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.

Late-arriving aircraft
47%
Carrier
26%
National Airspace System
25%
Extreme weather
2%

47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,246 reported delay minutes here, that single category outweighs weather by 22 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,246 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.5% on time here.

Cancellations sit at 1.60% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 4.6% land an hour or more behind schedule, against 8.1% 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.

At 236 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 5am–8am window matters as much as it does.

The return leg is a different operation and performs like one: it runs 87.3% on time across 311 flights, 3 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.

One caution: this is a thin sample. 312 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 LAX

Put together: treat all of this as provisional. 312 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 84.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 307 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