Carrier route record
OOSLC→LAX
SkyWest Airlines · Salt Lake City to Los Angeles
- Flights
- 691
- Period
- July 2025 to June 2026
- Share of route
- 17%
- Carriers
- 6
Historical statistics for July 2025 to June 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 12 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 691 flights. The strongest carrier on the route with a full sample, Frontier Airlines, flew 456 at 88.4% on time.
Set against the rest of the country, SkyWest's SLC to LAX record is 12 points better than the US average of 77.6%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.
Key figures
On time
89.6%
Arrivals under 15 minutes late, of 690 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
Whole route
86.2%
Every carrier on SLC to LAX, 4,146 flights
These figures cover 691 flights between July 2025 and June 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.
Carrier by carrier
SkyWest against every carrier on SLC to LAX
SkyWest flew 691 of the 4,146 flights on SLC to LAX, about 17% of it. Its 89.6% on time is 3 points better than the route as a whole, which runs 86.2%. Ranked by on-time rate it is number three of six carriers on the route, where the range runs from United at 91.9% to Southwest at 80.4%. 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 88.4% of the time; Southwest Airlines manages 80.4%. Sample sizes sit next to every figure, because a two-point gap across 374 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+ |
| Spirit Airlinesthin sample | 23 | 90.9% | 29 min | 4.35% | A− |
| SkyWest Airlines (this page) | 691 | 89.6% | 78 min | 0.00% | A+ |
| Frontier Airlines | 456 | 88.4% | 74 min | 1.54% | A |
| Delta Air Lines | 2,454 | 85.4% | 51 min | 0.41% | A+ |
| Southwest Airlines | 374 | 80.4% | 46 min | 0.27% | B+ |
Frontier leads Southwest by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
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 11 points, against 8 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am176 flights88.6%
- 8am–11am41 flights82.9%
- 11am–2pm110 flights89.1%
- 2pm–5pm116 flights90.5%
- 5pm–8pm147 flights93.9%
- 8pm–5am101 flights87.1%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 93.9% on time. The full set of windows spans 11 points.
Across the year
SkyWest on SLC to LAX through the year
August is the worst month at 83.3% on time, 12 points below June, the best at 95.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 89 flights.
Across the week, Wednesday is the strongest day at 93.4% on time and Friday the weakest at 85.4%. 8 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 64% of the 5,606 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.
- 64%Carrier
- 24%Late-arriving aircraft
- 8%National Airspace System
- 5%Extreme weather
The largest share of delay minutes, 64%, 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 3,577 of the 5,606 delay minutes reported here. The split is drawn from 5,606 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.81% 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 3.8% 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 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. 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 89.6% on time across 691 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. 691 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. 691 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 89.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 690 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 LAX88.4%
- Delta Air Lines on SLC to LAX85.4%
- Southwest Airlines on SLC to LAX80.4%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- Los Angeles International (LAX) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
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.