How far is Kailua from Seattle by air?

The great-circle distance between Ellison Onizuka Kona International Airport at Keāhole and Seattle–Tacoma International Airport is approximately 2,689 mi.

How long is the flight from Kailua to Seattle?

Based on the distance, the estimated flight time is about 5h 55m. This is an estimate, not a schedule.

Is there a direct connection from Kailua to Seattle?

Yes, a direct connection between KOA and SEA has been observed in our route data.

Which airlines have been observed on this route?

In the available route data: Alaska Airlines and Delta Air Lines.

How often is there a flight from Kailua to Seattle?

On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 103 observed flights. Mainly Alaska Airlines, Delta Air Lines. That is an observation, not a timetable.

Route

Kailua → Seattle

KOA

KailuaEllison Onizuka Kona International Airport at Keāhole

SEA

SeattleSeattle–Tacoma International Airport

08:57 AM11:57 AM

Distance: 2,689 mi
Estimated flight time: ~5h 55m

Seattle is currently 3 hours ahead of Kailua.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

A couple of times a day

On average around 2 flights a day, observed from October 2025 to September 2026.

2
flights per day: 2
busiest month · Oct: 5 hr 14 min
measured flight time: 4 / 12
months seen

Through the year

Per day, month by month

–Jan2026
2Feb
2Mar
–Apr
–May
–Jun
–Jul
–Aug
–Sep
2Oct2025
2Nov
–Dec

Airlines

Who flies it

Alaska Airlinesautumn

Delta Air Linesautumn

Through the day

Departure times

Local time in Kailua. Most departures between 20:00 and 23:00.

00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

Through the week

By weekday

0.2Mon
0.3Tue
0.2Wed
0.3Thu
0.3Fri
0.3Sat
0.3Sun

Fleet

Aircraft observed

Boeing 737-800B73828%
Airbus A321neoA21N23%
Boeing 737 MAX 9B39M21%
Boeing 737 MAX 8B38M12%
Boeing 757-200B7528%

All the numbers in a table

Month	Per day	Seen	Airlines
January 2026	Not seen in this month.
February 2026	2	18	Alaska Airlines12× Delta Air Lines6×
March 2026	2	8	Alaska Airlines5× Delta Air Lines3×
April 2026	Not seen in this month.
May 2026	Not seen in this month.
June 2026	Not seen in this month.
July 2026	Not seen in this month.
August 2026	Not seen in this month.
September 2026	Not seen in this month.
October 2025	2	73	Alaska Airlines51× Delta Air Lines22×
November 2025	2	4	Alaska Airlines2× Delta Air Lines2×
December 2025	Not seen in this month.

Airlines observed on this route

From observed callsign routes on KOA-SEA - not a booking guarantee.

Alaska Airlines

AS · ASA

Hub: SEA Seattle

98 departure airportsView airline →

Delta Air Lines

DL · DAL

Hub: ATL Atlanta

221 departure airportsView airline →

About this route

Intercontinental: this route connects two continents.
The 7th longest observed direct route from KOA, out of 16.
The opposite direction has also been observed as a direct connection.
Direct destinations observed from Kailua: 16.
Direct destinations observed from Seattle: 132.

The airports on this route

Ellison Onizuka Kona International Airport at Keāhole

Kailua, United StatesKOA / PHKO

Regional airport · 16 direct destinations · 1 runway · longest runway 11,001 ft

84 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport page All direct destinations

Seattle–Tacoma International Airport

Seattle, United StatesSEA / KSEA

International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft

68 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

Airport page All direct destinations

About the route from Kailua to Seattle

The observed direct connection between Ellison Onizuka Kona International Airport at Keāhole (KOA) and Seattle–Tacoma International Airport (SEA) covers approximately 2,689 mi. The estimated flight time is around 5h 55m. Alaska Airlines and Delta Air Lines have been observed on this connection in the available route data.

Frequently asked questions about this route

How far is Kailua from Seattle by air?: The great-circle distance between Ellison Onizuka Kona International Airport at Keāhole and Seattle–Tacoma International Airport is approximately 2,689 mi.
How long is the flight from Kailua to Seattle?: Based on the distance, the estimated flight time is about 5h 55m. This is an estimate, not a schedule.
Is there a direct connection from Kailua to Seattle?: Yes, a direct connection between KOA and SEA has been observed in our route data.
Which airlines have been observed on this route?: In the available route data: Alaska Airlines and Delta Air Lines.
How often is there a flight from Kailua to Seattle?: On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 103 observed flights. Mainly Alaska Airlines, Delta Air Lines. That is an observation, not a timetable.
What is the current time difference between Kailua and Seattle?: Seattle is currently 3 hours ahead of Kailua.

Where this data comes from

The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

Route data updated on October 11, 2026.