Carrier route record
OOSLC→LAX
SkyWest Airlines · Salt Lake City to Los Angeles
- Flights
- 720
- Period
- September 2025 to August 2026
- Share of route
- 17%
- Carriers
- 6
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SLC 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 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 720 flights. The strongest carrier on the route with a full sample, Frontier Airlines, flew 475 at 90.0% on time.
Set against the rest of the country, SkyWest's SLC to LAX record is 14 points better than the US average of 77.3%. That gap is worth roughly 138 fewer late arrivals for every thousand flights.
Key figures
On time
91.1%
Arrivals under 15 minutes late, of 720 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
Whole route
85.6%
Every carrier on SLC to LAX, 4,196 flights
These figures cover 720 flights between September 2025 and August 2026. The median arrival is 16 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 LAX
SkyWest flew 720 of the 4,196 flights on SLC to LAX, about 17% of it. Its 91.1% on time is 6 points better than the route as a whole, which runs 85.6%. Ranked by on-time rate it is number two of six carriers on the route, where the range runs from United at 91.9% to Southwest at 80.3%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Frontier Airlines arrives on time 90.0% of the time; Southwest Airlines manages 80.3%. Sample sizes sit next to every figure, because a two-point gap across 371 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlinesthin sample | 148 | 91.9% | 34 min | 0.00% | A+ |
| SkyWest Airlines (this page) | 720 | 91.1% | 77 min | 0.00% | A+ |
| Spirit Airlinesthin sample | 23 | 90.9% | 29 min | 4.35% | A− |
| Frontier Airlines | 475 | 90.0% | 73 min | 1.05% | A |
| Delta Air Lines | 2,459 | 83.5% | 52 min | 0.53% | B+ |
| Southwest Airlines | 371 | 80.3% | 44 min | 0.27% | B+ |
Frontier leads Southwest by 10 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
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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 720 flights.
- 5am–8am145 flights90.3%
- 8am–11am72 flights88.9%
- 11am–2pm110 flights89.1%
- 2pm–5pm156 flights92.3%
- 5pm–8pm147 flights93.9%
- 8pm–5am90 flights90.0%
Scale runs 80% to 100%.
The 5pm–8pm window is the strongest at 93.9% on time. The full set of windows spans 5 points.
Across the year
SkyWest on SLC to LAX through the year
January is the weak month at 85.9% on time, against 97.6% in August. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. March was the busiest month here, with 89 flights.
Across the week, Wednesday is the strongest day at 93.7% on time and Sunday the weakest at 88.9%, a spread of 5 points.
Arrival by arrival
How late SkyWest on SLC to LAX runs when it is late
SkyWest on SLC to LAX often beats the schedule: 390 of 720 completed flights, 54%, arrived 15 minutes or more early. The 64 late arrivals split 21 under half an hour, 20 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early390 flights54.2%
- Within 15 min266 flights36.9%
- 15–29 min late21 flights2.9%
- 30–59 min late20 flights2.8%
- 1–2 hours late12 flights1.7%
- 2+ hours late11 flights1.5%
Scale runs 0% to 100%.
Share of 720 completed flights by arrival against schedule.
A late pushback is often recovered here: of 74 departures that left 15 minutes late or more, 28 still arrived on time. 18 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on SLC to LAX
The latest arrival of the period was on 13 October 2025, 9 hours 57 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 October 2025 | 9 hours 57 minutes | Carrier |
| 1 January 2026 | 4 hours 58 minutes | Late-arriving aircraft |
| 18 January 2026 | 4 hours 35 minutes | Carrier |
| 11 September 2025 | 4 hours 28 minutes | Carrier |
| 1 February 2026 | 3 hours 54 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 61% of the 4,915 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 27%Late-arriving aircraft
- 7%National Airspace System
- 5%Extreme weather
The largest share of delay minutes, 61%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,022 of the 4,915 delay minutes reported here. The split is drawn from 4,915 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.89% 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
Badly late arrivals are rare here: only 3.2% 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 590 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 is a different operation and performs like one: it runs 88.0% on time across 720 flights, 3 points below 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. 720 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 LAX
Put together: treat all of this as provisional. 720 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 91.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 720 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to LAX, every carrier
- SkyWest on LAX to SLC, the return leg
- United Airlines on SLC to LAX91.9%
- Frontier Airlines on SLC to LAX90.0%
- Delta Air Lines on SLC to LAX83.5%
- Southwest Airlines on SLC to LAX80.3%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- Los Angeles International (LAX) delay statistics
- Worst months to fly in the US, ranked by the data
- How to read this site: grades, sample sizes, and honest caveats
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.