Carrier route record

OOSLC→AUS

SkyWest Airlines · Salt Lake City to Austin

Flights: 232
Period: July 2025 to June 2026
Share of route: 13%
Carriers: 3

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

SkyWest on SLC to AUS 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 roughly 55 minutes. That rests on 232 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 1,081 at 82.6% on time.

Set against the rest of the country, SkyWest's SLC to AUS record is 10 points better than the US average of 77.6%. That gap is worth roughly 102 fewer late arrivals for every thousand flights.

On time

87.8%

Arrivals under 15 minutes late, of 229 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

0.86%

National rate is 1.81%

Whole route

82.1%

Every carrier on SLC to AUS, 1,783 flights

These figures cover 232 flights between July 2025 and June 2026. The median arrival is 9 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 SLC to AUS

SkyWest flew 232 of the 1,783 flights on SLC to AUS, about 13% of it. Its 87.8% on time is 6 points better than the route as a whole, which runs 82.1%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 87.8% to Southwest at 78.2%.

The two carriers here are closely matched: 4 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on SLC to AUS
Airline	Flights	On time	Avg delay	Cancelled	Grade
SkyWest Airlines (this page)thin sample	232	87.8%	53 min	0.86%	A+
Delta Air Lines	1,081	82.6%	66 min	0.56%	B+
Southwest Airlines	470	78.2%	50 min	0.64%	B+

No carrier stands out. Delta tops the table at 82.6%, 4 points clear of the bottom, which is inside the range this kind of sample moves year to year.

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 232 flights.

5am–8am—
8am–11am79 flights89.9%
11am–2pm—
2pm–5pm—
5pm–8pm—
8pm–5am153 flights86.7%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

The 8am–11am window is the strongest at 89.9% on time. The full set of windows spans 3 points.

Across the year

SkyWest on SLC to AUS through the year

Jul–Sep 202552 flights80.8%
Oct–Dec 202543 flights95.2%
Jan–Mar 202648 flights82.6%
Apr–Jun 202689 flights91.0%

Scale runs 70% to 100%. 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 87.8% on time across 232 flights.

SkyWest on SLC to AUS did not run the same all year. Its best quarter was Oct–Dec 2025 at 95.2% on time and its weakest Jul–Sep 2025 at 80.8%, a swing of 14 points on roughly 58 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 95.2% on time and Sunday the weakest at 75.6%. 20 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 88% of the 1,482 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
88%
Extreme weather
8%
National Airspace System
4%

The largest share of delay minutes, 88%, 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 1,307 of the 1,482 delay minutes reported here. The split is drawn from 1,482 reported delay minutes.

Cancellations are rare at 0.86%, 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 3.1% 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 1,086 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 87.8% on time across 233 flights, within half 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. 232 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 SLC to AUS

Put together: treat all of this as provisional. 232 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 87.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 229 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