Carrier route record

ASOGG→SEA

Alaska Airlines · Kahului to Seattle

Flights: 1,322
Period: September 2025 to August 2026
Share of route: 73%
Carriers: 3

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

Alaska on OGG to SEA lands a B, 2 points 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 50 minutes on average. That rests on 1,322 flights, with a median arrival 7 minutes early.

The US average over the same twelve months is 77.3%, 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

79.3%

Arrivals under 15 minutes late, of 1,292 completed flights

Avg delay

52 min

Across delayed arrivals only, not all flights

Cancelled

1.82%

National rate is 1.89%

Whole route

81.1%

Every carrier on OGG to SEA, 1,809 flights

These figures cover 1,322 flights between September 2025 and August 2026. The median arrival is 7 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

Alaska against every carrier on OGG to SEA

Alaska flew 1,322 of the 1,809 flights on OGG to SEA, most of the route. Its 79.3% on time is 2 points worse than the route as a whole, which runs 81.1%. 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 58.7%. 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	1.10%	A
Alaska Airlines (this page)	1,322	79.3%	52 min	1.82%	B
Hawaiian Airlinesthin sample	122	58.7%	47 min	0.82%	D+

Flight by flight

Alaska flight numbers on OGG to SEA

AS 20621:4079.9% · 267 flights

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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.

5am–8am83 flights89.0%
8am–11am251 flights90.5%
11am–2pm208 flights63.6%
2pm–5pm386 flights78.6%
5pm–8pm—
8pm–5am394 flights79.1%

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 63.6% on time against 90.5% 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, April worst

Delays peak in April, when the on-time rate falls to 73.3%. June is the strongest month at 84.7%. Moving a flexible trip across that boundary buys 11 points. March was the busiest month here, with 124 flights.

Across the week, Tuesday is the strongest day at 82.4% on time and Thursday the weakest at 76.3%, a spread of 6 points.

Arrival by arrival

How late Alaska on OGG to SEA runs when it is late

Alaska on OGG to SEA often beats the schedule: 466 of 1,292 completed flights, 36%, arrived 15 minutes or more early. The 268 late arrivals split 108 under half an hour, 90 between 30 and 60 minutes, and 70 an hour or more.

15+ min early466 flights36.1%
Within 15 min558 flights43.2%
15–29 min late108 flights8.4%
30–59 min late90 flights7.0%
1–2 hours late49 flights3.8%
2+ hours late21 flights1.6%

Scale runs 0% to 100%.

Share of 1,292 completed flights by arrival against schedule.

A late pushback is often recovered here: of 277 departures that left 15 minutes late or more, 86 still arrived on time. In the other direction, 77 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 SEA.

The worst days

Worst days for Alaska on OGG to SEA

The latest arrival of the period was on 25 May 2026, 6 hours 49 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On four of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of Alaska on OGG to SEA in the period
Date	Arrived late by	Largest filed cause
25 May 2026	6 hours 49 minutes	Carrier
29 October 2025	5 hours 1 minute	Late-arriving aircraft
27 October 2025	3 hours 58 minutes	Late-arriving aircraft
18 September 2025	3 hours 40 minutes	Late-arriving aircraft
25 February 2026	3 hours 35 minutes	Late-arriving aircraft

Delay causes

Why Alaska runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 14,000 reported delay minutes.

Late-arriving aircraft
39%
Carrier
34%
National Airspace System
18%
Extreme weather
8%
Security
0%

39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 14,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 13,816 reported delay minutes.

The largest share of delay minutes, 34%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,753 of the 14,000 delay minutes reported here.

Cancellations sit at 1.82% against a national 1.89%, which is ordinary. Diversions add another 0.45%.

Connections and stage length

What a delay here costs

5.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 50 minutes, 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 78.2% on time across 1,322 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.

The sample behind these figures is 1,322 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: take the 8am–11am departure, avoid April if the dates are flexible, and if two carriers are within a few dollars of each other, Delta is the one with the record behind it. None of that guarantees an on-time arrival; it moves the odds by 27 points, which is the most any booking decision can do. 1,292 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