Carrier route record

ASOGG→SEA

Alaska Airlines · Kahului to Seattle

Flights: 1,260
Period: July 2025 to June 2026
Share of route: 70%
Carriers: 3

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

Alaska on OGG to SEA lands a B, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 1,260 flights, with a median arrival 6 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Alaska on OGG to SEA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

77.6%

Arrivals under 15 minutes late, of 1,230 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.90%

National rate is 1.81%

Whole route

79.3%

Every carrier on OGG to SEA, 1,809 flights

These figures cover 1,260 flights between July 2025 and June 2026. The median arrival is 6 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

Alaska against every carrier on OGG to SEA

Alaska flew 1,260 of the 1,809 flights on OGG to SEA, most of the route. Its 77.6% on time is 2 points worse than the route as a whole, which runs 79.3%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 95.3% to Hawaiian at 59.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on OGG to SEA
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	365	95.3%	94 min	1.92%	A
Alaska Airlines (this page)	1,260	77.6%	56 min	1.90%	B
Hawaiian Airlinesthin sample	184	59.6%	42 min	0.54%	D+

Departure window

When Alaska runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 27 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am21 flights—
8am–11am313 flights89.4%
11am–2pm196 flights62.2%
2pm–5pm336 flights78.5%
5pm–8pm—
8pm–5am394 flights74.4%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 62.2% on time against 89.4% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8pm–5am window is the busiest, with 394 flights scheduled in it.

Across the year

Alaska on OGG to SEA through the year

Darker means more delays. Figures are on-time percentages.June best, July worst

July is the worst month at 67.4% on time, 17 points below June, the best at 84.7%. 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 124 flights.

Across the week, Saturday is the strongest day at 82.4% on time and Sunday the weakest at 72.8%. 10 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Alaska runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 43% of the 15,000 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.

Late-arriving aircraft
43%
Carrier
32%
National Airspace System
19%
Extreme weather
6%
Security
0%

43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 15,000 reported delay minutes here, that single category outweighs weather by 8 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 15,341 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.4% on time here.

Cancellations sit at 1.90% against a national 1.81%, which is ordinary. Diversions add another 0.48%.

Connections and stage length

What a delay here costs

6.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 2,639 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 76.9% on time across 1,260 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.

The sample behind these figures is 1,260 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.

What to do with this

Booking Alaska on OGG to SEA

Put together: the calendar is the biggest lever here, not the carrier or the hour. June runs 84.7% on time and July 67.4%, a swing of 17 points. If the dates move at all, move them out of July before you think about anything else. 1,230 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures