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DelayAtlas

Carrier route record

OOSLC→AUS

SkyWest Airlines · Salt Lake City to Austin

Flights
242
Period
September 2025 to August 2026
Share of route
13%
Carriers
3
B+GRADE

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

SkyWest on SLC to AUS 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 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 242 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 1,072 at 83.2% on time.

Set against the rest of the country, SkyWest's SLC to AUS record is 7 points better than the US average of 77.3%. That gap is worth roughly 72 fewer late arrivals for every thousand flights.

Key figures

On time

84.5%

Arrivals under 15 minutes late, of 238 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

0.83%

National rate is 1.89%

Whole route

81.5%

Every carrier on SLC to AUS, 1,796 flights

These figures cover 242 flights between September 2025 and August 2026. The median arrival is 8 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.

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Carrier by carrier

SkyWest against every carrier on SLC to AUS

SkyWest flew 242 of the 1,796 flights on SLC to AUS, about 13% of it. Its 84.5% on time is 3 points better than the route as a whole, which runs 81.5%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 84.5% to Southwest at 76.2%.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 83.2% of the time; Southwest Airlines manages 76.2%. 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 SLC to AUS
AirlineFlightsOn timeAvg delayCancelledGrade
SkyWest Airlines (this page)thin sample24284.5%50 min0.83%B+
Delta Air Lines1,07283.2%62 min0.65%B+
Southwest Airlines48276.2%50 min0.62%B+

Delta leads Southwest by 7 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

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 242 flights.

  • 5am–8am—
  • 8am–11am128 flights81.9%
  • 11am–2pm—
  • 2pm–5pm—
  • 5pm–8pm—
  • 8pm–5am114 flights87.4%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is the strongest at 87.4% on time. The full set of windows spans 6 points.

Across the year

SkyWest on SLC to AUS through the year

  • Jul–Sep 202513 flights—
  • Oct–Dec 202543 flights95.2%
  • Jan–Mar 202648 flights82.6%
  • Apr–Jun 202689 flights91.0%
  • Jul–Sep 202649 flights68.8%

Scale runs 60% 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 84.5% on time across 242 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 2026 at 68.8%, a swing of 26 points on roughly 61 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 92.5% on time and Sunday the weakest at 72.1%, a spread of 20 points.

Arrival by arrival

How late SkyWest on SLC to AUS runs when it is late

SkyWest on SLC to AUS often beats the schedule: 86 of 238 completed flights, 36%, arrived 15 minutes or more early. Most of the lateness is short. 19 of the 37 late arrivals were under half an hour behind, and 8 reached an hour or more.

  • 15+ min early86 flights36.1%
  • Within 15 min115 flights48.3%
  • 15–29 min late19 flights8.0%
  • 30–59 min late10 flights4.2%
  • 1–2 hours late5 flights2.1%
  • 2+ hours late3 flights1.3%

Scale runs 0% to 100%.

Share of 238 completed flights by arrival against schedule.

A late pushback is often recovered here: of 30 departures that left 15 minutes late or more, 9 still arrived on time. In the other direction, 16 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at AUS.

The worst days

Worst days for SkyWest on SLC to AUS

The latest arrival of the period was on 21 May 2026, 4 hours 50 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.

The latest arrivals of SkyWest on SLC to AUS in the period
DateArrived late byLargest filed cause
21 May 20264 hours 50 minutesCarrier
2 August 20263 hours 21 minutesCarrier
21 September 20252 hours 34 minutesCarrier
16 June 20261 hour 40 minutesCarrier
9 August 20261 hour 36 minutesCarrier

Delay causes

Why SkyWest runs late on this route

Carrier accounts for 89% of the 1,839 delay minutes carriers reported here, and the remaining four split what is left.

  • Carrier
    89%
  • Extreme weather
    6%
  • National Airspace System
    5%

The largest share of delay minutes, 89%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,640 of the 1,839 delay minutes reported here. The split is drawn from 1,839 reported delay minutes.

Cancellations are rare at 0.83%, below the national 1.89% 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 3.4% land an hour or more behind schedule, against 8.3% 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.

The return leg runs 85.8% on time across 244 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. 242 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. 242 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 84.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 238 completed flights over 12 months sit behind that.

Related

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.