Carrier route record

DLOGG→SEA

Delta Air Lines · Kahului to Seattle

Flights: 365
Period: July 2025 to June 2026
Share of route: 20%
Carriers: 3

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

Delta on OGG to SEA earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 18 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 365 flights, with a median arrival 21 minutes early.

Set against the rest of the country, Delta's OGG to SEA record is 18 points better than the US average of 77.6%. That gap is worth roughly 177 fewer late arrivals for every thousand flights.

On time

95.3%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

94 min

Across delayed arrivals only, not all flights

Cancelled

1.92%

National rate is 1.81%

Whole route

79.3%

Every carrier on OGG to SEA, 1,809 flights

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 21 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

Delta against every carrier on OGG to SEA

Delta flew 365 of the 1,809 flights on OGG to SEA, about 20% of it. Its 95.3% on time is 16 points better than the route as a whole, which runs 79.3%. Ranked by on-time rate it is first 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 (this page)	365	95.3%	94 min	1.92%	A
Alaska Airlines	1,260	77.6%	56 min	1.90%	B
Hawaiian Airlinesthin sample	184	59.6%	42 min	0.54%	D+

Flight by flight

Delta flight numbers on OGG to SEA

DL 39422:0095.3% · 365 flights

Departure window

When Delta 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 365 flights.

The overnight block holds up unusually well at 95.3% on time across 365 flights. Red-eyes fly into empty airspace and empty gates, and they are the first rotation of the aircraft's day rather than the last. The 8pm–5am window is the busiest, with 365 flights scheduled in it.

Across the year

Delta on OGG to SEA through the year

Darker means more delays. Figures are on-time percentages.September best, December worst

December is the weak month at 87.1% on time, against 100.0% in September. 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. January was the busiest month here, with 31 flights.

Across the week, Thursday is the strongest day at 98.1% on time and Sunday the weakest at 92.0%. 6 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Delta runs late on this route

One category carries most of the weight here. Carrier accounts for 75% of the 1,597 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.

Carrier
75%
Late-arriving aircraft
15%
National Airspace System
10%

The largest share of delay minutes, 75%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,197 of the 1,597 delay minutes reported here. The split is drawn from 1,597 reported delay minutes.

Cancellations sit at 1.92% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 0.8% land an hour or more behind schedule, against 8.1% 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 2,639 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 is a different operation and performs like one: it runs 87.7% on time across 365 flights, 8 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 8 points of difference.

One caution: this is a thin sample. 365 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 Delta on OGG to SEA

Put together: treat all of this as provisional. 365 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 95.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 358 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