Carrier route record

ASLAX→KOA

Alaska Airlines · Los Angeles to Kailua-Kona

Flights: 374
Period: September 2025 to August 2026
Share of route: 23%
Carriers: 5

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Alaska Airlines.

Alaska on LAX to KOA lands a B, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 35 minutes on average. That rests on 374 flights. The strongest carrier on the route with a full sample, United Airlines, flew 489 at 89.2% on time.

The US average over the same twelve months is 77.3%, so there is little to separate Alaska on LAX to KOA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

78.7%

Arrivals under 15 minutes late, of 367 completed flights

Avg delay

37 min

Across delayed arrivals only, not all flights

Cancelled

1.07%

National rate is 1.89%

Whole route

81.8%

Every carrier on LAX to KOA, 1,601 flights

These figures cover 374 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

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Carrier by carrier

Alaska against every carrier on LAX to KOA

Alaska flew 374 of the 1,601 flights on LAX to KOA, about 23% of it. Its 78.7% on time is 3 points worse than the route as a whole, which runs 81.8%. Ranked by on-time rate it is number four of five carriers on the route, where the range runs from Southwest at 91.3% to American at 74.9%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. United Airlines arrives on time 89.2% of the time; Delta Air Lines manages 81.1%. Sample sizes sit next to every figure, because a two-point gap across 365 flights means less than a ten-point one.

On-time performance by carrier on LAX to KOA
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlinesthin sample	23	91.3%	47 min	0.00%	A+
United Airlines	489	89.2%	44 min	0.82%	A+
Delta Air Lines	365	81.1%	58 min	1.37%	B
Alaska Airlines (this page)	374	78.7%	37 min	1.07%	B
American Airlinesthin sample	350	74.9%	65 min	0.57%	C+

United leads Delta by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Flight by flight

Alaska flight numbers on LAX to KOA

AS 56009:2680.2% · 294 flights

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Departure window

When Alaska 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 374 flights.

There are not enough flights in each departure window to split Alaska's LAX to KOA record by time of day without the percentages moving on noise. The headline rate of 78.7% is the reliable figure here.

Across the year

Alaska on LAX to KOA through the year

Darker means more delays. Figures are on-time percentages.May best, January worst

January is the weak month at 63.3% on time, against 96.8% in May. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. April was the busiest month here, with 36 flights.

Across the week, Friday is the strongest day at 84.3% on time and Saturday the weakest at 72.7%, a spread of 12 points.

Arrival by arrival

How late Alaska on LAX to KOA runs when it is late

Most of the lateness is short. 51 of the 78 late arrivals were under half an hour behind, and 10 reached an hour or more.

15+ min early62 flights16.9%
Within 15 min227 flights61.9%
15–29 min late51 flights13.9%
30–59 min late17 flights4.6%
1–2 hours late7 flights1.9%
2+ hours late3 flights0.8%

Scale runs 0% to 100%.

Share of 367 completed flights by arrival against schedule.

A late pushback is often recovered here: of 51 departures that left 15 minutes late or more, 19 still arrived on time. In the other direction, 46 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at KOA.

The worst days

Worst days for Alaska on LAX to KOA

The latest arrival of the period was on 25 September 2025, 2 hours 47 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.

The latest arrivals of Alaska on LAX to KOA in the period
Date	Arrived late by	Largest filed cause
25 September 2025	2 hours 47 minutes	Carrier
17 September 2025	2 hours 42 minutes	Carrier
7 February 2026	2 hours 2 minutes	Carrier
16 January 2026	1 hour 54 minutes	Carrier
8 October 2025	1 hour 50 minutes	Carrier

Delay causes

Why Alaska runs late on this route

National Airspace System accounts for 64% of the 2,912 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
64%
Carrier
29%
Late-arriving aircraft
5%
Extreme weather
2%

64% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,871 minutes out of 2,912, against a national NAS share of 21%. The split is drawn from 2,912 reported delay minutes.

Cancellations sit at 1.07% against a national 1.89%, which is ordinary. Diversions add another 0.80%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 2.7% 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.

At 2,504 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg runs 79.5% on time across 374 flights, within about 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. 374 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 Alaska on LAX to KOA

Put together: treat all of this as provisional. 374 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 78.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 367 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures