Carrier route record
OOSLC→LGB
SkyWest Airlines · Salt Lake City to Long Beach
- Flights
- 621
- Period
- July 2025 to June 2026
- Share of route
- 40%
- 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 LGB earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 621 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 468 at 89.2% on time.
Set against the rest of the country, SkyWest's SLC to LGB record is 16 points better than the US average of 77.6%. That gap is worth roughly 159 fewer late arrivals for every thousand flights.
Key figures
On time
93.5%
Arrivals under 15 minutes late, of 620 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
Whole route
87.4%
Every carrier on SLC to LGB, 1,552 flights
These figures cover 621 flights between July 2025 and June 2026. The median arrival is 10 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 LGB
SkyWest flew 621 of the 1,552 flights on SLC to LGB, about 40% of it. Its 93.5% on time is 6 points better than the route as a whole, which runs 87.4%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 93.5% to Southwest at 77.3%.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 89.2% of the time; Southwest Airlines manages 77.3%. Sample sizes sit next to every figure, because a two-point gap across 463 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 621 | 93.5% | 42 min | 0.00% | A+ |
| Delta Air Lines | 468 | 89.2% | 61 min | 0.64% | A+ |
| Southwest Airlines | 463 | 77.3% | 40 min | 0.22% | B+ |
Delta leads Southwest by 12 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
Flight by flight
SkyWest flight numbers on SLC to LGB
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 621 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm—
- 2pm–5pm359 flights94.4%
- 5pm–8pm1 flights—
- 8pm–5am261 flights92.3%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
The 2pm–5pm window is the strongest at 94.4% on time. The full set of windows spans 2 points.
Across the year
SkyWest on SLC to LGB through the year
Delays peak in April, when the on-time rate falls to 85.0%. June is the strongest month at 100.0%. Moving a flexible trip across that boundary buys 15 points. August was the busiest month here, with 62 flights.
Across the week, Monday is the strongest day at 97.7% on time and Friday the weakest at 90.9%. 7 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 60% of the 1,690 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.
- 60%Carrier
- 29%Extreme weather
- 11%National Airspace System
Extreme weather accounts for 29% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.6 times the usual weather exposure. The split is drawn from 1,690 reported delay minutes.
The largest share of delay minutes, 60%, 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 1,021 of the 1,690 delay minutes reported here.
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 1.3% 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 588 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 93.1% on time across 622 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. 621 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 LGB
Put together: treat all of this as provisional. 621 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 93.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 620 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to LGB, every carrier
- SkyWest on LGB to SLC, the return leg
- Delta Air Lines on SLC to LGB89.2%
- Southwest Airlines on SLC to LGB77.3%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- Same route, different airline: where the carrier you pick matters most
- 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.