Route reliability record
LGB→SLC
Long Beach to Salt Lake City
- Flights
- 1,569
- Period
- September 2025 to August 2026
- Distance
- 588 mi
- Carriers
- 3
This route 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 11 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 1,569 LGB to SLC flights, of which SkyWest Airlines flew 560 at 92.1% on time.
Best time to fly LGB to SLC: a 8am–11am departure, ideally on a Tuesday. Flights in that window arrived on time 96.1% of the time and Tuesday flights 91.9%, against 88.7% for the route overall.
SkyWest Airlines is the most reliable of the three carriers covered here at 92.1% on time across 560 flights.
Key figures
On time
88.7%
Arrivals under 15 minutes late, of 1,558 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
0.45%
National rate is 1.89%
Best carrier
SkyWest
92.1% on time across 560 flights
These figures cover 1,569 flights between September 2025 and August 2026. The median arrival is 11 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
Which airline is most reliable on LGB to SLC
The choice of carrier is not cosmetic here. SkyWest Airlines arrives on time 92.1% of the time; Southwest Airlines manages 85.1%. Sample sizes sit next to every figure, because a two-point gap across 480 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 560 | 92.1% | 91 min | 0.00% | A+ |
| Delta Air Lines | 529 | 88.3% | 90 min | 1.13% | A |
| Southwest Airlines | 480 | 85.1% | 51 min | 0.21% | A+ |
SkyWest leads Southwest by 7 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
Flight by flight
Flights on LGB to SLC
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Long Beach to Salt Lake City
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 4 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. LGB → SLCLong Beach to Salt Lake City | SkyWest Airlines | 92.1% | 92.1% | 0.00% | 5am–8am, Mon | OO 3793 16:50 |
| 2. BUR → SLCBurbank to Salt Lake City | Delta Air Lines | 91.2% | 91.9% | 0.71% | 5am–8am, Tue | DL 2582 07:00 |
| 3. BUR → SLCBurbank to Salt Lake City | SkyWest Airlines | 91.2% | 91.7% | 0.53% | 5am–8am, Tue | OO 3693 16:50 |
| 4. ONT → SLCOntario to Salt Lake City | Delta Air Lines | 90.1% | 91.1% | 1.15% | 8am–11am, Tue | DL 2708 06:00 |
| 5. LAX → SLCLos Angeles to Salt Lake City | SkyWest Airlines | 88.0% | 88.0% | 0.00% | 5pm–8pm, Tue | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 11 points, against 7 points between the best and worst carrier.
- 5am–8am372 flights93.5%
- 8am–11am181 flights96.1%
- 11am–2pm455 flights87.3%
- 2pm–5pm274 flights86.1%
- 5pm–8pm260 flights85.0%
- 8pm–5am27 flights—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 96.1% of the time, against 85.0% for the evening window. That is 11 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 455 flights scheduled in it.
Explore
Filter LGB to SLC by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On LGB to SLC, the best departure window is 8am–11am at 96.1% on time and the worst is 5pm–8pm at 85.0%, a wide gap of 11.1 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am93.5%
- 8–11am96.1%
- 11am–2pm87.3%
- 2–5pm86.1%
- 5–8pm85.0%
- 8pm–5am—
best all US flightsScale 60% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
Twelve months, one bar each, drawn from the same 1,569 flights. The strip shows how much of this route's record is set by the calendar rather than by the operation.
August is the worst month at 83.6% on time, 11 points below January, the best at 94.6%. 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 138 flights.
Across the week, Tuesday is the strongest day at 91.9% on time and Sunday the weakest at 83.2%, a spread of 9 points.
Delay causes
Why this route gets delayed
Carrier accounts for 66% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Carrier
- 23%Late-arriving aircraft
- 8%Extreme weather
- 3%National Airspace System
The largest share of delay minutes, 66%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 8,650 of the 13,000 delay minutes reported here. The split is drawn from 13,108 reported delay minutes.
Cancellations are rare at 0.45%, 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 actually costs
Badly late arrivals are rare here: only 4.2% 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 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.
The return leg runs 86.2% on time across 1,569 flights, within 3 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,569 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in SLC after this flight
What to do with this
Booking this route
Put together: avoid the 5pm–8pm departure. It runs 85.0% on time against 96.1% for the 8am–11am slot, and that 11 points is the largest single thing you control here. SkyWest Airlines is the strongest operator if the fares are close. 1,558 completed flights over 12 months sit behind that.
Common questions
LGB to SLC questions
How often is LGB to SLC delayed?
About one flight in nine arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 11.3% of the 1,569 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on LGB to SLC?
SkyWest Airlines leads at 92.1% on time across 560 flights. Southwest Airlines is at the other end on 85.1%, a gap of 7 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on LGB to SLC?
The 8am–11am departure window is the strongest at 96.1% on time. The 5pm–8pm window is the weakest at 85.0%, 11 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are August delays on LGB to SLC?
August is the weakest month at 83.6% on time, compared with 94.6% in January. Across the year that is 11 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- SLC to LGB — the return legseparate record
- Salt Lake City International (SLC) delay statistics
- SkyWest Airlines on LGB to SLC92.1%
- Delta Air Lines on LGB to SLC88.3%
- Southwest Airlines on LGB to SLC85.1%
- LGB to LAS, a related route80.4%
- DEN to SLC, a related route78.2%
- LGB to SMF, a related route86.8%
- SkyWest Airlines on-time record92.1%
- Delta Air Lines on-time record88.3%
- Southwest Airlines on-time record85.1%
- The most punctual routes in the US, and the least
- The best time of day to fly, according to 7.05 million flight records
Direction matters. LGB to SLC and SLC to LGB are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.