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DelayAtlas

Carrier route record

OOAUSLAX

SkyWest Airlines · Austin to Los Angeles

Flights
817
Period
July 2025 to June 2026
Share of route
20%
Carriers
6
A+GRADE

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

SkyWest on AUS to LAX earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 817 flights. The strongest carrier on the route with a full sample, United Airlines, flew 451 at 88.8% on time.

United Airlines is the most reliable of the four carriers covered here at 88.8% on time across 451 flights.

Key figures

On time

88.0%

Arrivals under 15 minutes late, of 811 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

0.49%

National rate is 1.81%

Whole route

81.3%

Every carrier on AUS to LAX, 4,077 flights

These figures cover 817 flights between July 2025 and June 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.

Carrier by carrier

SkyWest against every carrier on AUS to LAX

SkyWest flew 817 of the 4,077 flights on AUS to LAX, about 20% of it. Its 88.0% on time is 7 points better than the route as a whole, which runs 81.3%. Ranked by on-time rate it is number two of six carriers on the route, where the range runs from United at 88.8% to American at 71.5%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. United Airlines arrives on time 88.8% of the time; American Airlines manages 71.5%. Sample sizes sit next to every figure, because a two-point gap across 482 flights means less than a ten-point one.

On-time performance by carrier on AUS to LAX
AirlineFlightsOn timeAvg delayCancelledGrade
United Airlines45188.8%91 min0.44%A+
SkyWest Airlines (this page)81788.0%71 min0.49%A+
Delta Air Lines1,28683.0%69 min1.09%B
Spirit Airlinesthin sample1675.0%54 min0.00%B+
Southwest Airlines1,02575.0%52 min0.49%B+
American Airlines48271.5%98 min1.04%C

The spread between United and American is 17 points, wide enough that it should decide the booking. On a hundred trips that is 17 more arrivals inside the on-time window.

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 817 flights.

  • 5am–8am373 flights88.7%
  • 8am–11am48 flights95.7%
  • 11am–2pm
  • 2pm–5pm384 flights86.1%
  • 5pm–8pm11 flights
  • 8pm–5am1 flights

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 95.7% of the time, against 86.1% for the afternoon window. That is 10 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 384 flights scheduled in it.

Across the year

SkyWest on AUS to LAX through the year

On-time rate by calendar month86J84F92M75A93M88J94J98A93S96O81N83D
Darker means more delays. Figures are on-time percentages.August best, April worst

Delays peak in April, when the on-time rate falls to 74.6%. August is the strongest month at 98.2%. Moving a flexible trip across that boundary buys 24 points. June was the busiest month here, with 117 flights.

Across the week, Tuesday is the strongest day at 93.4% on time and Friday the weakest at 85.1%. 8 points is a smaller lever than departure hour, but it is free.

On-time rate by day of the week86.3Mon93.4Tue90.7Wed86.5Thu85.1Fri87.2Sat86.7Sun
Monday: 86.3 percent on time. Tuesday: 93.4 percent on time. Wednesday: 90.7 percent on time. Thursday: 86.5 percent on time. Friday: 85.1 percent on time. Saturday: 87.2 percent on time. Sunday: 86.7 percent on time

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. Carrier accounts for 59% of the 6,901 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
    59%
  • Late-arriving aircraft
    28%
  • Extreme weather
    9%
  • National Airspace System
    5%

The largest share of delay minutes, 59%, 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 4,040 of the 6,901 delay minutes reported here. The split is drawn from 6,901 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 95.7% on time here.

Cancellations are rare at 0.49%, below the national 1.81% 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 stage length

What a delay here costs

Badly late arrivals are rare here: only 3.9% 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.

The 1,242 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg runs 85.6% on time across 817 flights, within 2 points 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. 817 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 AUS to LAX

Put together: treat all of this as provisional. 817 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 88.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 811 completed flights over 12 months sit behind that.

Related

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.