Carrier route record
DLOGG→SEA
Delta Air Lines · Kahului to Seattle
- Flights
- 365
- Period
- September 2025 to August 2026
- Share of route
- 20%
- Carriers
- 3
Historical statistics for September 2025 to August 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 77.3%. 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 77.3%. That gap is worth roughly 180 fewer late arrivals for every thousand flights.
Key figures
On time
95.3%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
94 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.89%
Whole route
81.1%
Every carrier on OGG to SEA, 1,809 flights
These figures cover 365 flights between September 2025 and August 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.
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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 14 points better than the route as a whole, which runs 81.1%. 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 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines (this page) | 365 | 95.3% | 94 min | 1.10% | A |
| Alaska Airlines | 1,322 | 79.3% | 52 min | 1.82% | B |
| Hawaiian Airlinesthin sample | 122 | 58.7% | 47 min | 0.82% | D+ |
Flight by flight
Delta flight numbers on OGG to SEA
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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
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 Saturday the weakest at 92.2%, a spread of 6 points.
Arrival by arrival
How late Delta on OGG to SEA runs when it is late
Delta on OGG to SEA often beats the schedule: 240 of 361 completed flights, 66%, arrived 15 minutes or more early. The 17 late arrivals split 8 under half an hour, 6 between 30 and 60 minutes, and 3 an hour or more.
- 15+ min early240 flights66.5%
- Within 15 min104 flights28.8%
- 15–29 min late8 flights2.2%
- 30–59 min late6 flights1.7%
- 1–2 hours late2 flights0.6%
- 2+ hours late1 flights0.3%
Scale runs 0% to 100%.
Share of 361 completed flights by arrival against schedule.
Only 19 of 361 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for Delta on OGG to SEA
The latest arrival of the period was on 9 December 2025, 16 hours 50 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 December 2025 | 16 hours 50 minutes | Carrier |
| 14 June 2026 | 1 hour 23 minutes | Carrier |
| 4 January 2026 | 1 hour 16 minutes | Carrier |
| 16 December 2025 | 55 minutes | Late-arriving aircraft |
| 7 February 2026 | 48 minutes | Late-arriving aircraft |
Delay causes
Why Delta runs late on this route
Carrier accounts for 80% of the 1,591 delay minutes carriers reported here, and the remaining four split what is left.
- 80%Carrier
- 12%Late-arriving aircraft
- 8%National Airspace System
The largest share of delay minutes, 80%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,272 of the 1,591 delay minutes reported here. The split is drawn from 1,591 reported delay minutes.
Cancellations sit at 1.10% against a national 1.89%, 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 8.3% 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 2,639 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 86.0% on time across 365 flights, 9 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 9 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. 361 completed flights over 12 months sit behind that.
Related
Where to go next
- OGG to SEA, every carrier
- Delta on SEA to OGG, the return leg
- Alaska Airlines on OGG to SEA79.3%
- Hawaiian Airlines on OGG to SEA58.7%
- Delta Air Lines network-wide record
- Kahului Airport (OGG) delay statistics
- Seattle-Tacoma International (SEA) delay statistics
- Worst months to fly in the US, ranked by the data
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.