SLC → LAX Flight Reliability

Right now

Origin · SLCNo disruption reported

Aviation weather is not currently a factor.

Updated 08:54 UTC

Salt Lake City airport profile →

Destination · LAXNo disruption reported

Aviation weather is not currently a factor.

Updated 08:53 UTC

Los Angeles airport profile →

Route reliability

July 2023 – July 2026

Route Reliability Score

84/ 100Strong

Better than 93% of comparable major US routes (4,598 compared)

Calculated from 13,286 flights. How this is calculated

On-time arrivals

85.0%

11,251 of 13,238

Cancellation rate

0.33%

44 cancelled

Median arrival delay

-8 min

Average -0.3 min

Severe delays

4.1%

60+ minutes late

Delay when late

59 min

Average, when 15+ min late

Flights analyzed

13,286

6 carriers

SLC → LAX arrives on time 85.0% of the time; the return trip, LAX → SLC, arrives on time 88.2% of the time, a 3.2-point gap between the two directions of the same city pair.

SLC → LAX spends 29.2 minutes on the ground on a 590-mile trip: 18.0 minutes from pushback to wheels-up at SLC and 11.2 minutes from touchdown to gate at LAX.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

What stands out

This route has stayed remarkably steady year over year, a smaller swing than 97% of 5,368 comparable routes.

86.5% on time over the most recent 12 months (2025-08 to 2026-07), against 86.3% in the 12 months before (2024-08 to 2025-07), virtually unchanged.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 5,368 in the comparison.

When it goes wrong

July 2023 – July 2026

One arrival in ten is worse than

25 min late

against a median of 8 min early

Arrived an hour or more late4.1%

Typical delay when late59 min

Cancelled0.33%

Landed somewhere else0.03%

Percentiles over 13,286 operations; cancelled and diverted flights are counted separately.

Will your connection be tight enough?

Layovers at LAX after arriving from SLC.

Connection buffer and chance of missing by layover length, SLC → LAX arrivals
Connection time	Chance of missing	Reads as
30 min	30%	High risk
45 min	14%	Some risk
60 min	8.4%	Some risk
90 min	4.0%	Low risk
120 min	2.3%	Low risk

This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.33% of the time and diverts 0.03% of the time, which a late arrival never shows up in.

Chance of missing is the share of 13,238 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.

The worst tenth of arrivals on this route land at least 25 minutes late (90th-percentile gate arrival delay), over 13,286 operations.

Any other layover length: connection checker.

Best time to fly

SLC → LAX flights departing 5–9 AM arrived on time 90.9% of the time, against 76.7% for 6–9 PM departures, a gap of 14.2 percentage points.

By day and hour

On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (SLC).

Hour of departure matters more than day of the week: hourly averages sit a typical 5.6 points from the route-wide rate, weekday averages 2.6 points.

On-time arrival rate for SLC to LAX by weekday and scheduled departure hour, local time. Each button reads out one slot.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
7 AM–8 AM
8 AM–9 AM
9 AM–10 AM
10 AM–11 AM
11 AM–12 PM
12 PM–1 PM
1 PM–2 PM
2 PM–3 PM
3 PM–4 PM
4 PM–5 PM
5 PM–6 PM
6 PM–7 PM
7 PM–8 PM
8 PM–9 PM
9 PM–10 PM
10 PM–11 PM

On-time rate, % · stronger color, fewer on time

72–75
76–79
80–83
84–87
88–91
92–95

Fewer than 120 flights, not scored

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.

No slot is named best or worst: too few reach 500 flights. Departures before 7 AM and after 11 PM (88 flights) are not drawn: no slot in those hours has enough flights to score.

View as tableHide table

On-time arrival rate (%) with flights beneath, by scheduled departure hour and weekday for SLC to LAX. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
7 AM–8 AM	92.1% on time151 flights	91.0% on time169 flights	93.9% on time179 flights	90.8% on time152 flights	87.9% on time150 flights	93.8% on time162 flights	87.7% on time156 flights
8 AM–9 AM	89.7% on time195 flights	90.7% on time183 flights	93.4% on time183 flights	92.1% on time191 flights	92.7% on time194 flights	89.3% on time179 flights	87.2% on time188 flights
9 AM–10 AM	90.0% on time190 flights	95.1% on time184 flights	91.9% on time186 flights	90.8% on time195 flights	91.0% on time190 flights	94.6% on time203 flights	92.8% on time194 flights
10 AM–11 AM	55 flights, too few to score	60 flights, too few to score	55 flights, too few to score	62 flights, too few to score	58 flights, too few to score	54 flights, too few to score	68 flights, too few to score
11 AM–12 PM	89.9% on time179 flights	91.9% on time186 flights	92.4% on time185 flights	89.5% on time190 flights	88.0% on time184 flights	86.4% on time185 flights	86.3% on time192 flights
12 PM–1 PM	60 flights, too few to score	59 flights, too few to score	59 flights, too few to score	75 flights, too few to score	58 flights, too few to score	58 flights, too few to score	94 flights, too few to score
1 PM–2 PM	56 flights, too few to score	36 flights, too few to score	37 flights, too few to score	56 flights, too few to score	53 flights, too few to score	35 flights, too few to score	32 flights, too few to score
2 PM–3 PM	31 flights, too few to score	17 flights, too few to score	18 flights, too few to score	27 flights, too few to score	35 flights, too few to score	35 flights, too few to score	32 flights, too few to score
3 PM–4 PM	84.1% on time172 flights	87.4% on time190 flights	84.3% on time191 flights	82.0% on time172 flights	82.1% on time173 flights	78.0% on time186 flights	76.0% on time184 flights
4 PM–5 PM	89 flights, too few to score	90 flights, too few to score	91 flights, too few to score	92 flights, too few to score	90 flights, too few to score	78 flights, too few to score	86 flights, too few to score
5 PM–6 PM	81.3% on time274 flights	86.3% on time227 flights	86.5% on time230 flights	76.4% on time246 flights	81.1% on time264 flights	82.2% on time210 flights	72.6% on time221 flights
6 PM–7 PM	62 flights, too few to score	22 flights, too few to score	22 flights, too few to score	59 flights, too few to score	62 flights, too few to score	64 flights, too few to score	66 flights, too few to score
7 PM–8 PM	85 flights, too few to score	55 flights, too few to score	60 flights, too few to score	75 flights, too few to score	85 flights, too few to score	104 flights, too few to score	98 flights, too few to score
8 PM–9 PM	97 flights, too few to score	86 flights, too few to score	87 flights, too few to score	94 flights, too few to score	101 flights, too few to score	83 flights, too few to score	95 flights, too few to score
9 PM–10 PM	115 flights, too few to score	112 flights, too few to score	112 flights, too few to score	110 flights, too few to score	114 flights, too few to score	79.9% on time137 flights	115 flights, too few to score
10 PM–11 PM	87.4% on time135 flights	86.9% on time130 flights	85.8% on time127 flights	86.9% on time137 flights	77.3% on time132 flights	18 flights, too few to score	72.4% on time136 flights

By departure window

5–9 AM90.9%

9 AM–12 PM90.6%

12–3 PM82.6%

3–6 PM82.4%

6–9 PM76.7%

9 PM–5 AM80.4%

By departure hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Why SLC → LAX runs late

July 2023 – July 2026

The airline49.6%

crew, maintenance, boarding and fueling, all within the carrier’s control

Late-arriving aircraft34.8%

the inbound aircraft was late, so this flight started late

Air traffic control13.6%

airspace and airport capacity, including weather-driven flow control

Weather1.9%

weather severe enough to stop this flight specifically

Security0.1%

screening or terminal security incidents

Share of the delay minutes US DOT attributed to each cause for SLC → LAX. Only delays of 15 minutes or more are attributed.

How this route holds up in bad weather

July 2023 – July 2026

Bad weather does little to cancellations at either end of this route. Cancelled in bad weather against normal hours: SLC 0.6% against 0.6%, LAX 1.0% against 0.8%. Flights that did leave SLC in bad weather arrived on time 71.0% of the time, against 84.8% in normal hours.

Bad weather and normal hours at the airports

Scheduled departures, July 2023 – July 2026

Departures from SLC and LAX in hours of bad weather and in normal hours
Departures from	SLC	LAX
Cancelled in bad weather	0.6%	1.0%
Cancelled in normal hours	0.6%	0.8%
Arrived on time, bad weather	71.0%	78.9%
Arrived on time, normal hours	84.8%	81.4%
Departures in bad weather	20,014	60,639

Of the carriers on this route, SkyWest Airlines (0.4% cancelled against 0.7% for the other carriers at SLC) cancelled the fewest departures from SLC in bad weather and Frontier Airlines (1.9% cancelled against 0.6% for the other carriers at SLC) the most. 2 more carriers fly this route but has too few bad-weather departures from SLC to compare.

This route’s airlines in bad weather at SLC

All departures from SLC

Cancellation rates in bad weather at SLC for the airlines that fly SLC to LAX, against the other carriers at SLC in the same months
Airline	Bad-weather departures	Cancelled	Other carriers
SkyWest Airlines	5,888	0.4%below the others	0.7%
Delta Air Lines	9,247	0.5%about level	0.7%
Southwest Airlines	2,115	0.6%about level	0.6%
Frontier Airlines	525	1.9%above the others	0.6%

These are airport figures, not route figures: every scheduled departure from SLC and LAX, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from SLC on every route.

Weather source and limits. In full: SLC (airlines), LAX, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.

Airlines on this route

Carriers with at least 200 flights, by the airline that operated each one.

Airlines on this route
Carrier	Flights	On time	Cancelled	Median delay	Severe
Delta Air Lines	7,577	85.5%	0.36%	-7 min	3.7%
SkyWest Airlines	2,323	89.3%	0.00%	-12 min	3.7%
Southwest Airlines	1,159	75.1%	0.09%	-2 min	5.4%
JetBlue	782	81.4%	0.13%	-10 min	6.5%
Frontier Airlines	652	88.3%	1.38%	-16 min	3.9%
Spirit Airlines	644	80.9%	0.93%	-10 min	5.5%

Delta Air Lines flew 57.7% of the 13,137 flights listed. Frontier Airlines cancelled 1.38% of its flights here against 0.00% for SkyWest Airlines.

SkyWest Airlines arrived on time 14.2 percentage points more often than Southwest Airlines on this route.

Flights on this route

Flight numbers with at least 600 operations here and still on the schedule.

Flights on this route
Flight	Scheduled	Operations	On time
OO5408 SkyWest Airlines	8:00 AM	968	90.5%
DL841 Delta Air Lines	3:10 PM	785	81.1%
DL829 Delta Air Lines	11:20 AM	785	88.6%
DL1087 Delta Air Lines	7:45 AM	779	91.4%
DL1142 Delta Air Lines	9:25 PM	773	77.6%
DL1161 Delta Air Lines	5:10 PM	771	82.6%
DL1095 Delta Air Lines	9:25 AM	750	92.1%

DL1095 (9:25 AM) arrived on time 92.1% of the time, 14.5 points more often than DL1142 (9:25 PM) at 77.6%.

Weekly and seasonal patterns

By day of week

Mon84.7%

Tue88.9%

Wed88.0%

Thu83.9%

Fri83.7%

Sat85.4%

Sun80.7%

Tuesday is historically the most reliable day and Sunday the least, a gap of 8.2 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

July is historically the weakest month and November the strongest, a spread of 11.1 percentage points.

Reliability over time

July 2023 – July 2026

24

25

26

Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 86.5% against 86.3% in the 12 months before — broadly unchanged.

Data and methodology

Calculated by FlyerIntel from 13,286 SLC → LAX flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.

Full methodology · Data sources · Report a problem

Analysis last recomputed September 26, 2026

SLC airport LAX airport Return direction LAX → SLC

SLC→LAX

Right now

Route reliability

What stands out

When it goes wrong

Will your connection be tight enough?

Best time to fly

By day and hour

By departure window

By departure hour

Why SLC → LAX runs late

How this route holds up in bad weather

Bad weather and normal hours at the airports

This route’s airlines in bad weather at SLC

Airlines on this route

Flights on this route

Weekly and seasonal patterns

By day of week

By month

Reliability over time

Data and methodology