Kailua-Kona (KOA) to Seattle (SEA)
Flight time
≈ 6h 11m
Bearing
37° NE
Kailua-Kona (KOA) to Seattle (SEA) is 2,688 miles (4,327 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies KOA–SEA
US DOT T-100 · filed dataIn April 2026, Alaska Airlines operated the most departures, one of 2 carriers flying nonstop KOA–SEA; the Boeing 737 MAX 9 was the most common aircraft at 52% of departures; flights ran 84% full.
Departures
222
April 2026
Seats
40,133
both directions
Passengers
33,874
both directions
Load factor
84.4%
passengers ÷ seats
Who flies KOA–SEA?
Alaska Airlines operated the most nonstop KOA–SEA departures in April 2026 (162), one of 2 carriers on the route.
- AS
Alaska Airlines
162 departures · 28,518 seats
Share of departures73.0%83.5%
Load
- DL
Delta Air Lines
60 departures · 11,615 seats
Share of departures27.0%86.5%
Load
What plane flies KOA–SEA?
In April 2026, the Boeing 737 MAX 9 flew 52% of KOA–SEA departures — more than any other aircraft type.
- Boeing 737 MAX 9
116 departures · 83.0% load
52.3% - Airbus A321neo
38 departures · 85.4% load
17.1% - Boeing 737-900ER
28 departures · 81.5% load
12.6% - Boeing 757-200
22 departures · 88.4% load
9.9% - Boeing 737 MAX 8
14 departures · 92.2% load
6.3% - Boeing 737-800
4 departures · 86.7% load
1.8%
How has KOA–SEA traffic changed?
Nonstop KOA–SEA departures fell from 248 in May 2025 to 222 in April 2026.
Monthly nonstop KOA–SEA traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
248 departures · 34,576 passengers
83.0%
Load
June 2025
235 departures · 35,287 passengers
89.5%
Load
July 2025
243 departures · 37,165 passengers
91.0%
Load
August 2025
237 departures · 34,912 passengers
87.4%
Load
September 2025
221 departures · 26,342 passengers
70.7%
Load
October 2025
235 departures · 32,968 passengers
82.1%
Load
November 2025
220 departures · 31,711 passengers
79.7%
Load
December 2025
236 departures · 35,798 passengers
84.2%
Load
January 2026
248 departures · 37,171 passengers
82.1%
Load
February 2026
223 departures · 34,491 passengers
85.1%
Load
March 2026
242 departures · 37,438 passengers
86.1%
Load
April 2026
222 departures · 33,874 passengers
84.4%
Load
By direction
The DOT files each direction separately — they rarely match.
KOA → SEA
89.6% full
111 departures · 18,058 passengers
SEA → KOA
79.2% full
111 departures · 15,816 passengers
Nonstop KOA–SEA traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Kailua-Kona
US
Ellison Onizuka Kona International Airport at Keāhole
Coordinates
19.74°N, 156.05°W
Hemisphere
N · W
Frequently asked
How far is Kailua-Kona (KOA) from Seattle (SEA)?
KOA to SEA is 2,688 miles (4,327 km / 2,336 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from KOA to SEA?
A nonstop covers the 2,688-mile great-circle distance in roughly 6h 11m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies KOA–SEA?
In April 2026, the Boeing 737 MAX 9 flew the largest share of departures (52.3%), followed by the Airbus A321neo (17.1%).
What mileage do I earn flying KOA–SEA?
Distance-based programs credit off the 2,688-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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