LAX → SLC Flight Reliability

Right now

Origin · LAXNo disruption reported

Aviation weather is not currently a factor.

Updated 09:53 UTC

Los Angeles airport profile →

Destination · SLCNo disruption reported

Aviation weather is not currently a factor.

Updated 09:54 UTC

Salt Lake City airport profile →

Route reliability

July 2023 – July 2026

Route Reliability Score

87/ 100Strong

Better than 96% of comparable major US routes (4,598 compared)

Calculated from 13,286 flights. How this is calculated

On-time arrivals

88.2%

11,669 of 13,232

Cancellation rate

0.32%

42 cancelled

Median arrival delay

-10 min

Average -2.0 min

Severe delays

4.1%

60+ minutes late

Delay when late

66 min

Average, when 15+ min late

Flights analyzed

13,286

6 carriers

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

LAX → SLC spends 23.0 minutes on the ground on a 590-mile trip: 15.9 minutes from pushback to wheels-up at LAX and 7.1 minutes from touchdown to gate at SLC.

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

What stands out

This route holds up about the same all year, a steadier seasonal pattern than 97% of 3,357 comparable routes.

92.4% on time in its best month (November) against 83.8% in its worst (July).

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 3,357 in the comparison.

When it goes wrong

July 2023 – July 2026

One arrival in ten is worse than

20 min late

against a median of 10 min early

Arrived an hour or more late4.1%

Typical delay when late66 min

Cancelled0.32%

Landed somewhere else0.09%

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

Will your connection be tight enough?

Layovers at SLC after arriving from LAX.

Connection buffer and chance of missing by layover length, LAX → SLC arrivals
Connection time	Chance of missing	Reads as
30 min	23%	High risk
45 min	11%	Some risk
60 min	7.4%	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 0.32% of the time and diverts 0.09% of the time, which a late arrival never shows up in.

Chance of missing is the share of 13,232 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 20 minutes late (90th-percentile gate arrival delay), over 13,286 operations.

Any other layover length: connection checker.

Best time to fly

LAX → SLC flights departing 5–9 AM arrived on time 93.5% of the time, against 81.4% for 3–6 PM departures, a gap of 12.1 percentage points.

By day and hour

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

Hour of departure matters more than day of the week: hourly averages sit a typical 4.9 points from the route-wide rate, weekday averages 1.8 points.

On-time arrival rate for LAX to SLC by weekday and scheduled departure hour, local time. Each button reads out one slot.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
5 AM–6 AM
6 AM–7 AM
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

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

76–79
80–83
84–87
88–91
92–95
96–99

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 after 8 PM (205 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 LAX to SLC. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
5 AM–6 AM	93.3% on time137 flights	96.4% on time138 flights	97.0% on time135 flights	95.6% on time135 flights	94.9% on time138 flights	94.2% on time137 flights	94.8% on time137 flights
6 AM–7 AM	75 flights, too few to score	66 flights, too few to score	68 flights, too few to score	75 flights, too few to score	78 flights, too few to score	71 flights, too few to score	76 flights, too few to score
7 AM–8 AM	94.5% on time201 flights	95.3% on time192 flights	95.8% on time190 flights	96.5% on time198 flights	94.0% on time200 flights	88.7% on time205 flights	92.2% on time208 flights
8 AM–9 AM	51 flights, too few to score	70 flights, too few to score	71 flights, too few to score	61 flights, too few to score	47 flights, too few to score	75 flights, too few to score	49 flights, too few to score
9 AM–10 AM	95.5% on time180 flights	92.8% on time181 flights	94.5% on time182 flights	92.6% on time176 flights	94.4% on time177 flights	92.9% on time183 flights	91.0% on time168 flights
10 AM–11 AM	83.0% on time148 flights	102 flights, too few to score	103 flights, too few to score	85.4% on time151 flights	84.6% on time151 flights	110 flights, too few to score	82.9% on time123 flights
11 AM–12 PM	91.6% on time193 flights	91.0% on time177 flights	94.4% on time178 flights	92.4% on time210 flights	90.1% on time193 flights	90.8% on time197 flights	90.2% on time224 flights
12 PM–1 PM	39 flights, too few to score	34 flights, too few to score	34 flights, too few to score	49 flights, too few to score	40 flights, too few to score	26 flights, too few to score	70 flights, too few to score
1 PM–2 PM	85.2% on time217 flights	94.4% on time199 flights	86.0% on time187 flights	87.4% on time199 flights	83.2% on time216 flights	88.7% on time194 flights	80.7% on time208 flights
2 PM–3 PM	36 flights, too few to score	31 flights, too few to score	33 flights, too few to score	43 flights, too few to score	33 flights, too few to score	59 flights, too few to score	35 flights, too few to score
3 PM–4 PM	44 flights, too few to score	53 flights, too few to score	53 flights, too few to score	44 flights, too few to score	41 flights, too few to score	40 flights, too few to score	60 flights, too few to score
4 PM–5 PM	70 flights, too few to score	86 flights, too few to score	76 flights, too few to score	74 flights, too few to score	72 flights, too few to score	108 flights, too few to score	69 flights, too few to score
5 PM–6 PM	83.6% on time178 flights	86.5% on time171 flights	83.5% on time170 flights	81.6% on time174 flights	83.1% on time180 flights	83.5% on time177 flights	76.0% on time183 flights
6 PM–7 PM	113 flights, too few to score	93 flights, too few to score	101 flights, too few to score	116 flights, too few to score	112 flights, too few to score	95 flights, too few to score	113 flights, too few to score
7 PM–8 PM	85.2% on time232 flights	88.9% on time209 flights	91.1% on time236 flights	85.3% on time211 flights	78.0% on time225 flights	108 flights, too few to score	81.8% on time221 flights

By departure window

5–9 AM93.5%

9 AM–12 PM90.6%

12–3 PM85.6%

3–6 PM81.4%

6–9 PM85.7%

9 PM–5 AM—

By departure hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Departure windows with fewer than 120 flights are not scored.

Why LAX → SLC runs late

July 2023 – July 2026

The airline52.3%

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

Late-arriving aircraft40.0%

the inbound aircraft was late, so this flight started late

Air traffic control6.3%

airspace and airport capacity, including weather-driven flow control

Weather1.2%

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

Of the carriers on this route, Southwest Airlines (0.6% cancelled against 1.1% for the other carriers at LAX) cancelled the fewest departures from LAX in bad weather and Frontier Airlines (3.1% cancelled against 1.0% for the other carriers at LAX) the most.

This route’s airlines in bad weather at LAX

All departures from LAX

Cancellation rates in bad weather at LAX for the airlines that fly LAX to SLC, against the other carriers at LAX in the same months
Airline	Bad-weather departures	Cancelled	Other carriers
Southwest Airlines	8,724	0.6%below the others	1.1%
Delta Air Lines	11,619	0.9%about level	1.0%
SkyWest Airlines	11,169	1.0%about level	1.0%
JetBlue	2,801	1.0%about level	1.0%
Spirit Airlines	2,995	1.8%above the others	1.0%
Frontier Airlines	1,064	3.1%above the others	1.0%

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

Weather source and limits. In full: LAX (airlines), SLC, 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	7,574	89.7%	0.37%	-11 min	3.6%
SkyWest Airlines	2,324	89.4%	0.04%	-10 min	4.6%
Southwest Airlines	1,159	87.4%	0.17%	-8 min	2.5%
JetBlue	782	80.3%	0.00%	-5 min	6.1%
Frontier Airlines	652	84.2%	0.92%	-9 min	5.3%
Spirit Airlines	644	81.1%	0.78%	-10 min	7.0%

Delta Air Lines flew 57.7% of the 13,135 flights listed.

Delta Air Lines arrived on time 9.4 percentage points more often than JetBlue 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
DL1647 Delta Air Lines	1:25 PM	1,037	87.0%
DL1434 Delta Air Lines	9:55 AM	1,035	91.4%
DL1194 Delta Air Lines	11:35 AM	1,014	92.3%
DL2311 Delta Air Lines	5:20 PM	968	83.6%
DL2906 Delta Air Lines	5:45 AM	928	94.7%
OO5744 SkyWest Airlines	6:45 PM	898	89.1%
DL1318 Delta Air Lines	7:00 AM	782	92.8%
DL1483 Delta Air Lines	7:20 PM	777	83.5%

DL2906 (5:45 AM) arrived on time 94.7% of the time, 11.2 points more often than DL1483 (7:20 PM) at 83.5%.

Weekly and seasonal patterns

By day of week

Mon88.4%

Tue91.3%

Wed89.8%

Thu88.0%

Fri86.8%

Sat88.2%

Sun85.1%

Tuesday is historically the most reliable day and Sunday the least, a gap of 6.2 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 8.6 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 87.6% against 90.1% in the 12 months before — declining by 2.5 percentage points.

Data and methodology

Calculated by FlyerIntel from 13,286 LAX → SLC 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

LAX airport SLC airport Return direction SLC → LAX

LAX→SLC

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 LAX → SLC 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 LAX

Airlines on this route

Flights on this route

Weekly and seasonal patterns

By day of week

By month

Reliability over time

Data and methodology